Solve the problem.A certain number is three times as large as a second number. Their sum is 108. What are the two numbers?
A. 25 and 75
B. 84 and 24
C. 27 and 81
D. 25 and 83
Answer: C
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Solve the problem.The bar graph shows the number of fatal vehicle crashes per 100 million miles driven for drivers of various age groups. 
The number of fatal vehicle crashes per 100 million miles, N, for drivers of age x can be modeled by the formula N = 0.012x2 - 1.18x + 31.26.Using the formula, what age group(s) are expected to be involved in 4 fatal crashes per 100 million miles driven? Use a calculator and round to the nearest year. How well does the formula model the trend in the actual data shown in the bar graph?
A. 37 year-olds and 61 year-olds; The formula models the trend in the data reasonably well. B. 27 year-olds and 71 year-olds; The formula does not accurately model the data for ages expected to be involved in 4 fatal crashes per 100 million miles driven. C. 75 year-olds; The formula models the trend in the data reasonably well. D. 24 year-olds ; The formula does not accurately model the data for ages expected to be involved in 4 fatal crashes per 100 million miles driven.
Graph the equation by plotting points.y = 
A. 
B. 
C. 
D. 
Simplify the expression. Assume all variables represent positive real numbers.
- 
+ 
A. 
B. 
C. 
D. - 
Solve the problem.The population of a small town is given by the table. 
If the population is modeled by p(t) = at2 + b where t is in years and 
corresponds to the year 1980 and 
corresponds the year 1990, find a.
A. 16 B. 20 C. 10 D. 8