Solve.Find f-1(-3) and (f-1 ? f)(4) for the function f = {(6, -7), (4, -8), (5, -3)}.
A. {5, 4}
B. {5, -8}
C. {-3, -8}
D. 
Answer: A
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Solve the problem.Find the length of the pulley belt shown in the figure if the belt crosses at 60° angles. The radius of each circle is 9.39 in.
A. 104 in. B. 144 in. C. 81.8 in. D. Not enough information.
Write the rate as a unit rate.2100 people in 50 buses
A. 0.024 person/bus B. 420 people/bus C. 42 people/bus D. 2050 people/bus
Add or subtract as indicated and write the result in standard form.8i + (-6 - i)
A. -6 + 9i B. 6 - 7i C. 6 - 9i D. -6 + 7i
Solve the problem.The table shows the winning time for the women's 
run at seven consecutive summer Olympic Games.
Let x = 1 correspond to 1960 and let f(x) be the winning time for the women's 
run at the Olympics in year x. Using the points 
and 
style="vertical-align: -4.0px;" /> the following linear function is obtained to model the data: 
According to this model, will the winning time ever reach 10 seconds? If so, when? Do you think that it makes sense to use the model to make predictions for future years?
What will be an ideal response?