Question

Evaluate 23x-1 for x = 1.
1
4
7
8

Answer 1

Well assuming this is the same math problem I had on my algebra quiz, it is meant to be written as "Evaluate 2^3x1 for x = 1"

With that being said, the answer is "8"

Step 1: Simplify. Turn 2^3x-1 into 2^3(1)

Step 2: Multiply exponents. 3 times 1 is 3 so it simply becomes 2^3

Step 3: Solve. Multiply 2 by itself three times. By doing this, you get 8!

2x2x2=8

Answer 2

If x is 1, then 23x is 23, so we have 23-1=22 as the answer.