The graph of an exponential function is given. Select the function for the graph from the functions listed.
A. f(x) = 2x
B. f(x) = 2x- 2
C. f(x) = 2x + 2
D. f(x) = 2x - 2
Answer: A
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Find principal to the nearest dollar, rate to the nearest tenth of a percent, or time to the nearest day. Use banker's interest.Universal Gallery earned 
interest in 90 days from an investment that paid 5.5%. Find the amount initially invested.
A. $29,495 B. $7,273 C. $14,546 D. $29,091
Find the root. Assume that variables represent any real number.- 
A. x9
B. - 
C. -x9
D. 
Solve. Express the result in scientific notation. If necessary, round the decimal factor to two decimal places.If the mass of an object is 7.62816 × 10-6 tons and its volume is 8.22 × 10-3 cubic feet, find the density of this object. (Use the formula D = 
.)
A. 9.28 × 10-3 tons per cubic foot B. 9.28 × 10-5 tons per cubic foot C. 92.8 × 10-4 tons per cubic foot D. 9.28 × 10-4 tons per cubic foot
Solve the problem.Determine which rational function R(x) has a graph that crosses the x-axis at -1, touches the x-axis at -4, has vertical asymptotes at x = -2 and x = 3, and has one horizontal asymptote at y = -2.
A. R(x) = 
, x ? -2, 3
B. R(x) = 
, x ? -4, -1
C. R(x) = 
, x ? -2, 3
D. R(x) = 
, x ? 2, -3