Multiply.-4(3x - 7)
A. 12x - 28
B. -12x - 28
C. 12x + 28
D. -12x + 28
Answer: D
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Solve the problem.In the formula N = Iekt, N is the number of items in terms of an initial population I at a given time t and k is a growth constant equal to the percent of growth per unit time. There are currently 75 million cars in a certain country, increasing by 1.1% annually. How many years will it take for this country to have 95 million cars? Round to the nearest year.
A. 5 yr B. 272 yr C. 18 yr D. 21 yr
Refer to the weighted voting system 
and the Shapley-Shubik definition of power. (The three players are P1, P2, and P3.)In how many sequential coalitions is P2 the pivotal player?
A. 2 B. 1 C. 0 D. 6 E. none of these
Add by using the number line.7 + (-5)
A. -2 B. -12 C. 2 D. 3
Write the mixed number as an improper fraction.2
A. 
B. 
C. 
D. 