Solve the problem.Jim had grades of 92 and 86 on two chemistry tests. What is the lowest score he can get on the third test to maintain an average of 85?
A. 85
B. 77
C. 88
D. 89
Answer: B
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Determine whether the given points are on the graph of the equation.y = x3; (4, 12)
A. Yes B. No
Write the expression in spreadsheet notation. Let x be in cell A1.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Refer to the figure to solve the problem.A linear programing problem has the objective function 
, which is to be minimized. The following graph shows the feasible set and the straight line of all combinations of x and y for which the cost is $72. Give the linear equation (in standard form) of the line of constant cost c. Then, by inspection, find the vertex of the feasible set that gives the optimal solution. 
A. y = 
x - 
; C
B. y = - 
x + 
; B
C. y = - 
x + 
; B
D. y = 
x + 6; C
The manufacturer of a medicine wants to test how a new 300-milligram capsule is released into the bloodstream. After a volunteer is given a capsule, blood samples are drawn every half-hour, and the number of milligrams of the drug in the bloodstream is calculated. The results obtained are as follows.
Time t
N(t)
(hr)
(mg)
0
0
0.5
246.5
1
266
1.5
236.9
2
178.1
2.5
115.9
Use the trapezoidal rule to approximate the average number of milligrams in the bloodstream during the first 
hours and round your answer to two decimal places.
?
A. 433.60 mg
B. 197.09 mg
C. 123.18 mg
D. 256.22 mg
E. 335.05 mg