Solve the problem.John has received scores of 85, 88, 87, and 75 on her algebra tests. What is the minimum score he must receive on the fifth test to have an overall test score average of at least 83? (Hint: The average of a list of numbers is their sum divided by the number of numbers in the list.)
A. 80
B. 81
C. 78
D. 79
Answer: A
Mathematics
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Graph the equation using the indicated viewing window.y = x2 + 2;X min = -5X max = 5X scl = 1Y min = -20Y max = 20Y scl = 5
A. 
B. 
C. 
D. 
Mathematics
Simplify the expression. Assume that all variables represent nonnegative real numbers.
+ 2
- 5
A. -3
B. -25
C. -3
D. -25
Mathematics
Solve the system by graphing.3x + y = 173x + y = 32
A. (9, 8) B. (14, -25) C. Infinite number of solutions D. No solution
Mathematics
Differentiate.y = 5x2e3x
A. 5xe3x(2x + 3) B. 10xe3x(2x + 3) C. 5xe3x(3x + 2) D. 10ex3x(3x + 2)
Mathematics