Given the exponential function f(x)=2^x, which of the following represents a horizontal shift of +4 units?

a. f(x)=2^x-4
b. f(x)=2^x+4
c. f(x)=2^x^-4
d. f(x)=2^x^+4

Asmall car averages up to 29 more miles per gallon of gas that an suv. if a small car averages 44 miles per gallon, what is the average miles per gallon for an suv?

H(x)=4x2-5x h(-3) what is the answer?

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?