Solve. Round to two decimal places unless otherwise noted.In the following formula, y is the minimum number of hours of studying required to attain a test score of x: 
How many hours of study are needed to score 89?
A. 27.10 hr
B. 2.71 hr
C. 101.10 hr
D. 7.15 hr
Answer: B
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Convert the number to the indicated base.53six to base three
A. 100three B. 1020three C. 1120three D. 111three
Perform the indicated operation and write the answer in lowest terms. - 
+ 
A. - 
B. - 
C. 
D. 
For the given set of ordered pairs, determine whether a function could be defined for which the input would be an x-coordinate and the output would be the corresponding y-coordinate.{(-5, 4), (-1, 5), (1, -1), (7, -3)}
A. Yes B. No
The function given below gives the cost to manufacture x items. Estimate (using 
) the instantaneous rate of change of the total cost at the production level 
.
?
?
Select your answer rounded to the nearest tenth.
?
A. 100.1
B. 99.9
C. 100.9
D. 98.9
E. 101.1