Solve the system of linear equations.
a. 
b. 
c. 
d. 
d.
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Solve the problem.Use the formula N = Iekt, where N is the number of items in terms of the initial population I, at time t, and k is the growth constant equal to the percent of growth per unit of time. There are currently 60 million cars in a certain country, decreasing by 5.1% annually. How many years will it take for this country to have 50 million cars? Round to the nearest year.
A. 45 years B. 10 years C. 4 years D. 2 years
Use a calculator to solve the equation on the interval 0 ? ? < 2?. Round the answer to two decimal places.sin ? = 0.47
A. {0.49, 2.65} B. {0.49, 2.06} C. {0.49, 5.79} D. {0.49, 3.63}
Write a formula for the general term (the nth term) of the sequence. Then use the formula for an to find the twelfth term of the sequence.3, 12, 21, 30, . . .
A. an = 6n - 2; a12 = 70 B. an = 6n - 9; a12 = 63 C. an = 9n - 6; a12 = 102 D. an = 9n - 2; a12 = 106
Solve the equation. First simplify the expression by combining like terms.- 
(x + 14) + 
(x + 4) = x + 7
A. - 
B. - 
C. - 
D. - 