The following data, compiled by the superintendent of schools in a large metropolitan area, shows the average SAT verbal scores of high school seniors during the 5 years since the district implemented its "back-to-basics" program.
Year, x12345Average Score, y436438428430426?
Determine the equation of the least-squares line for these data. Use the result obtained to predict the average SAT verbal score of high school seniors 2 years from now (x = 7). Please round your answer to the nearest whole number.
?
A. 
B. ?
C. ?
D. ?
Answer: C
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Find the indicated rate.The city where Lu Na lives has a population of 1,976,884 people and an area of 91.5 square miles. What is the rate of number of people per square mile (the population density)?
A. 21,605 people/sq mi B. 180,884,886 people/sq mi C. 22,686 people/sq mi D. 0.0000463 people/sq mi
Solve the problem.Assume the cost of a car is $29,000. With continuous compounding in effect, find the number of years it would take to double the cost of the car at an annual inflation rate of 9.3%. Round the answer to the nearest hundredth.
A. 1.10 yr B. 110.48 yr C. 7.45 yr D. 117.94 yr
Solve the rational equation. If there is no solution, state this as your answer.
= 
A. no solution
B. 
C. 
D. {5}
Solve for x. Be sure to reduce your answer. Check your solution.- 
x = 0
A. x = 16 B. x = -16 C. x = 0 D. x = 1