Evaluate the function.f(x) = 9x + 2, f(b)
A. 11b
B. 18b
C. 11
D. 9b + 2
Answer: D
Mathematics
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Solve the system by the substitution method. y = x2 - 14x + 49x + y = 19
A. {(-3, 22), (-10, 29)} B. {(7, 12)} C. {(3, 22), (10, 9)} D. {(3, 16), (10, 9)}
Mathematics
Solve the formula for the specified variable.A = P(1 + nr) for r
A. r = 
B. r = 
C. r = 
D. r = 
Mathematics
Solve the problem.According to a recent survey, in 2000, 61% of households had one or more pets. Throughout the the next decade, this decreased by approximately 4% per year. Express the percentage of households having pets, P, as a function of the number of years after 2000, x.
A. P(x) = -0.04x + 61 B. P(x) = 0.61x - 0.04 C. P(x) = 0.04x + 0.61 D. P(x) = -0.04x + 0.61
Mathematics
Solve the equation.
- 1 = 2
A. {11} B. {11, 5} C. {-11, -5} D. ?
Mathematics