Solve the problem.If 
= 4x + 9, find f(x).
A. f(x) = 4x2 + 17x + 18
B. f(x) = 
C. f(x) = 4x2 + 18
D. f(x) = 5x + 11
Answer: A
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Solve the problem.Use the formula R = log
, where the magnitude of an earthquake on the Richter scale is based on I, the measurement of a seismic wave, and I0, the measurement of a seismic wave of a level zero earthquake with the same epicenter. If an earthquake measured 5.3 on the Richter scale, what was the intensity of the earthquake? (Round to whole number.)
A. 200 B. 158,489 C. 199,526 D. 19,953
Find the area of the triangle having the given measurements. Round to the nearest square unit.B = 20°, a = 4 feet, c = 8 feet
A. 11 square feet B. 22 square feet C. 15 square feet D. 5 square feet
Decide whether or not the functions are inverses of each other.f(x) = 3x + 9, g(x) = 
x - 3
A. Yes B. No
Factor completely. State that the polynomial is prime if it cannot be factored.x2 + 40x + 400
A. (x - 20)2 B. prime C. (x + 20)2 D. (x + 20)(x - 20)