Graph the exponential function. f(x) = 2^x + 1 Find out how long it takes a exist2900 investment to double if it is invested at 8% compounded semiannually. Round to the nearest tenth of a year Use the formula A = P(1 + r/n)^nt A) 86 years B) 9 years. C)92 years D) 88 years Give an exact answer. log_4 x + log_4 (x - 15) = 2 A) (4) B) (-163) C) (16) D) (-4) Solve the exponential equation by taking the logarithm on both sides. Express the solution set in terms of logarithms e^(x+7) = 4 A) in 11 B) e^4 + 7 C) in (4) -7 D) e^28 Find the center and radius of the circle. x^2 + y^2 + 2x + 16y + 61 =0 A) (1 8) r = 2 B) (8 1) r = 4 C) (1 8) r = 4 D) (8 1) r = 2
