2025HSCQ4Which of the following best represents the graph of y=−5x(x−2)(3−x)?y=-5x(x-2)(3-x)?y=−5x(x−2)(3−x)?1 markMultiple choice
2025HSCQ5What is ∫1x+5 dx?\int \frac{1}{\sqrt{x+5}}\,dx?∫x+51dx? A. 12x+5+C\frac{1}{2}\sqrt{x+5}+C21x+5 B. C. D. 1 markMultiple choice
2025HSCQ6The graph of y=f(x)y=f(x)y=f(x) is shown. Which of the following is the graph of y=−f(−x)y=-f(-x)y=−f(−x)? A–D. Candidate graphs are shown.1 markMultiple choice
2025HSCQ7A ten-sided die has faces numbered 1 to 10. The die is constructed so that the probability of obtaining the number 1 is greater than the probability of obtaining any of the other numbers. The numbers 2 to 10 are equally likely to occur. When the die is rolled 153 times, a 1 is obtained 72 times. By using the relative frequency of rolling a 1, which of the following is the best estimate for the probability of rolling a 10? A. 117\frac{1}{17}171 B. 111\frac{1}{11}111 C. 110\frac{1}{10}101 D. 19\frac{1}{9}911 markMultiple choice
2025HSCQ8The minimum daily temperature, in degrees, of a town each year follows a normal distribution with its mean equal to its standard deviation. The minimum daily temperature was recorded over one year. What percentage of the recorded minimum daily temperatures was above zero degrees? A. 16%16\%16% B. 50%50\%50% C. 68%68\%68% D. 84%84\%84%1 markMultiple choice
2025HSCQ9The diagram shows the graph of y=f′(x)y=f'(x)y=f′(x). Given f(1)=6f(1)=6f(1)=6, which interval includes the best estimate for f(1.1)f(1.1)f(1.1)? A. [6.2,6.4)[6.2,6.4)[6.2,6.4) B. [6.0,6.2)[6.0,6.2)[6.0,6.2) C. [5.8,6.0)[5.8,6.0)[5.8,6.0) D. [5.6,5.8)[5.6,5.8)[5.6,5.8)1 markMultiple choice
2025HSCQ10The graph of y=f(x)y=f(x)y=f(x), with all its stationary points, is shown. How many stationary points does the graph of y=f(ex)y=f(e^x)y=f(ex) have? A. 000 B. 111 C. 222 D. 3331 markMultiple choice
2025HSCQ11 (b)The graph of a quadratic function represented by the equation h=t2−8t+12h=t^2-8t+12h=t2−8t+12 is shown. The graph shows h=12h=12h=12 when t=0t=0t=0. What is the other value of ttt for which h=12h=12h=12? [Visual: A graph of the parabola h=t2−8t+12h=t^2-8t+12h=t2−8t+12, with hhh on the vertical axis and ttt on the horizontal axis. The graph crosses the -axis at and , and the -axis at .]1 markShort answer
2025HSCQ11 (a)The graph of a quadratic function represented by the equation h=t2−8t+12h=t^2-8t+12h=t2−8t+12 is shown. Find the values of ttt and hhh at the turning point of the graph. [Visual: A graph of the parabola h=t2−8t+12h=t^2-8t+12h=t2−8t+12, with hhh on the vertical axis and ttt on the horizontal axis. The graph crosses the -axis at and , and the -axis at .]2 marksShort answer
2025HSCQ14 (a)In a research study, participants were asked to record the number of minutes they spent watching television and the number of minutes they spent exercising each day over a period of 3 months. The averages for each participant were recorded and graphed. Describe the bivariate dataset in terms of its form and direction. Form: ............................................ Direction: ......................................2 marksShort answer
2025HSCQ15 (c)A sound wave can be modelled using a function P(t)=ksin(at)P(t)=k\sin(at)P(t)=ksin(at), where PPP is air pressure in Pascals, ttt is time in milliseconds (ms), and kkk and aaa are constants. Hence, find the values of ttt, where 0<t<100<t<100<t<10, for which functions P1(t)P_1(t)P1(t) and are BOTH decreasing.2 marksShort answer
2025HSCQ15 (b)A sound wave can be modelled using a function P(t)=ksin(at)P(t)=k\sin(at)P(t)=ksin(at), where PPP is air pressure in Pascals, ttt is time in milliseconds (ms) and kkk and aaa are constants. The graph of P1(t)P_1(t)P1(t) from part (a) is shown. On the diagram, sketch the graph of P2(t)=4sin(π10t)P_2(t)=4\sin\left(\frac{\pi}{10}t\right)P2(t)=4sin(10π for 0≤t≤100\leq t\leq100≤t≤10.2 marksShort answer
2025HSCQ15 (a)A sound wave can be modelled using a function P(t)=ksin(at)P(t)=k\sin(at)P(t)=ksin(at), where PPP is air pressure in Pascals, ttt is time in milliseconds (ms) and kkk and aaa are constants. Write the equation for a sound wave P1(t)P_1(t)P1(t) that has an amplitude of 2 Pascals and a period of 5 ms.2 marksShort answer
2025HSCQ16 (a)Consider the function f(x)=x2ex.f(x)=\frac{x^2}{e^x}.f(x)=exx2. Find the stationary points of the function and determine their nature.4 marksShort answer
2025HSCQ16 (b)Consider the function f(x)=x2ex.f(x)=\frac{x^2}{e^x}.f(x)=exx2. Use your answer from part (a) to complete the graph.1 markShort answer