Solve.All 36 of the students in a mathematics class attended class on Monday. On Tuesday only 28 students attended. What was the percent of decrease?
A. 28.6%
B. 77.8%
C. 71.4%
D. 22.2%
Answer: D
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Solve the problem.A man 6 ft tall walks at a rate of 7 ft/s away from a lamppost that is 18 ft high. At what rate is the length of his shadow changing when he is 70 ft away from the lamppost?
A. 
ft/s
B. 
ft/s
C. 
ft/s
D. 
ft/s
Give the equation of the function whose graph is described.The graph of y = 
is vertically stretched by a factor of 10, and the resulting graph is reflected across the x-axis.
A. y = 10
B. y = -10
C. y = -10
D. y = -
Use the circle graph to solve the problem.A survey of the 7409 vehicles on the campus of State University yielded the following circle graph.
Together, what percent of the vehicles are either vans or convertibles?
A. 18% B. 9% C. 162% D. 27%
Solve the problem.Find the sale price when the original price is $86.00 and the discount rate is 11%.
A. $85.05 B. $9.46 C. $76.54 D. $0.95