Solve the system algebraically.x + 3y = -42x + 3y = 4
A. (-8, -5)
B. (9, 8)
C. no solution
D. (8, -4)
Answer: D
Mathematics
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Evaluate the integral.
A. 
? cos 10
B. 
?2 cos 10
C. 
? cos 10
D. 
?2 cos 10
Mathematics
A manufacturer has been selling 1,200 television sets a week at $400 each. A market survey indicates that for each $30 rebate offered to the buyer, the number of sets sold will increase by 60 per week. Find the demand function.
What will be an ideal response?
Mathematics
Differentiate.f(x) = (5x + 6)2
A. f'(x) = 10(5x + 6)2 B. f'(x) = 5(5x + 6) C. f'(x) = 10(5x + 6) D. f'(x) = 2(5x + 6)
Mathematics
Simplify. Assume that all variables represent positive real numbers.
- 4
- 7
A. 44
B. -22
C. 22
D. -32
Mathematics