Translate the words into inequalities. Use x for the variable.The temperature is greater than 7°F.
A. x < 7
B. x ? 7
C. x ? 7
D. x > 7
Answer: D
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Evaluate the integral.
A. cos-1 
x + C
B. 
sin-1 
x + C
C. 2 cos-1 
x + C
D. sin-1 
x + C
(8, -8); (-9, 3)
A. 
B. 
C. - 
D. - 
When money is spent on goods and services, those that receive the money also spend some of it. The people receiving some of the twice-spent money will spend some of that, and so on. Economists call this chain reaction the multiplier effect. In a hypothetical isolated community, the local government begins the process by spending D dollars. Suppose that each recipient of spent money spends 100c% and saves 100s% of the money that he or she receives. The values c and s are called the marginal propensity to consume and the marginal propensity to save and, of course, c+s=1. The number k = 1/s is called the multiplier. What is the multiplier if the marginal propensity to consume is 90%?
Select the correct answer. a. 4 b. 3 c. 6 d. 7 e. 10
Solve the quadratic equation by completing the square.7x2 - 2x - 4 = 0
A. 
B. 
C. 
D. 