Solve the problem.An average score of 90 for 5 exams is needed for a final grade of A. John's first 4 exam grades are 79, 89, 97, and 95. What range of scores on the fifth (and last) 100-point exam will guarantee John an A in the course?
A. 90 to 100
B. 95 to 100
C. 99 to 100
D. 85 to 100
Answer: A
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Find the surface area or volume.The region between the curve y = sinx, 0 ? x ? 1.9, and the x-axis is revolved about the x-axis to generate a solid. Use a table of integrals to find, to two decimal places, the volume of the solid generated.
A. 3.31 B. 3.47 C. 3.53 D. 3.66
Multiply.
A. 488 B. 628 C. 528 D. 494
Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.csc ? = - 
, tan ? > 0Find cos 
.
A. 
B. - 
C. 
D. - 
Solve the following.Two foods are served to provide vitamin A and vitamin C. Food I contains 36 mg of vitamin C and 900 iu of vitamin A per unit. Food II contains 24 mg of vitamin C and 420 iu of vitamin A per unit. The calorie content is 100 calories per unit of Food I and 150 calories per unit of food II. How many units of each should be served so a patient receives at least 192 mg of vitamin C, at least 3900 iu of vitamin A, and so that the number of calories is minimized.
What will be an ideal response?