A weight is attached to a spring suspended vertically from a ceiling. When a driving force is applied to the system, the weight moves vertically from its equilibrium position, and this motion is modeled by
?
where y is the distance from equilibrium (in feet) and t is the time (in seconds).
Find the amplitude of the oscillations of the weight.
?
A. 
B. 
C. 
D. 
E. 
Answer: C
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Solve the problem.The grading scale for a C in Amy's biology class is an average on tests between 70% and 80%, inclusive. Amy has 67%, 84%, and 77% on the first three tests this semester. What range of scores on the fourth test would give her a C?
A. Between 52% and 92%, inclusive B. 87% or better C. Between 70% and 80%, inclusive D. Between 57% and 87%, inclusive
Use a proportion to solve the problem.The ratio of a quarterback's completed passes to attempted passes is 4:9. If he attempted 
find how many passes he completed. Round to the nearest whole number if necessary.
A. 9 passes B. 41 passes C. 8 passes D. 2 passes
Graph the inequality.y ? x - 5
A. 
B. 
C. 
D. 
Solve the problem.The sales for a gaming console for various years are listed in the table below. 
Let f(t) represent the sales (in billions of dollars) at t years since 2008. A reasonable model is 
According to the model, when were sales at a minimum? What were the sales in that year?
A. 2015; $170 million B. 2013; $172 million C. 2014; $180 million D. 2013; $166 million