Write the inequality using interval notation, and illustrate the inequality using the real number line.7 < x < 10
A. (7, 10)
B. (7, 10)
C. [7, 10)
D. [7, 10]
Answer: A
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Plot the curve of the given polar equation in polar coordinates.r = 
A. 
B. 
C. 
D. 
Solve the problem.A company is constructing an open-top, square-based, rectangular metal tank that will have a volume of 
What dimensions yield the minimum surface area? Round to the nearest tenth, if necessary.
A. 10.6 ft × 10.6 ft × 0.5 ft B. 3.8 ft × 3.8 ft × 3.8 ft C. 5.5 ft × 5.5 ft × 1.8 ft D. 4.8 ft × 4.8 ft × 2.4 ft
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 problem.Suppose that f and g are continuous and that 
and 
A. 25 B. -5 C. 11 D. 16