Answer:
103
Explanation:
Given: 54+c², c=7
We can substitute 7 for c into the equation first:
54+7²
The question is asking to evaluate the exponent first, which is the ² part of the expression.
Broken down, we have 54 and 7², so let's focus on 7² first.
7² says that you have to multiply 7 x 7, or in words, multiply 7 by itself.
7 x 7 =49, so c²=49.
Back to the entire equation, we now have:
54+49
=103
Hope this helps :)