Question

evaluate the expression $7x + 5^2$ if x = 4.
53
99
38
36

Explanation:

Step1: Substitute \( x = 4 \) into the expression

Substitute \( x = 4 \) into \( 7x + 5^2 \), we get \( 7\times4 + 5^2 \).

Step2: Calculate the exponent

Calculate \( 5^2 = 25 \), so the expression becomes \( 7\times4 + 25 \).

Step3: Calculate the multiplication

Calculate \( 7\times4 = 28 \), so the expression becomes \( 28 + 25 \).

Step4: Calculate the addition

Calculate \( 28 + 25 = 53 \).

Answer:

53