Algebra 2 exponential expression

Question

Standard form for an exponential expression is A·B^x. Find the value of A for the exponential expression

5^{(x + 3)}.

(a) 15

(b) 5

(c) 3

(d) 125

Answer 1

5^(x+3) is like 5^x • 5³ (With like bases, the exponents add for multiplication.)

Must be 125 • 5^x, so A = 125 (d), B = 5.