Answer: 26
Step-by-step explanation: Here, we have the expression 7s + 5 and we want to evaluate the expression when s is equal to 3.
To evaluate an expression, we simply plug the value
of the variable into the expression and solve.
So here, since s is equal to 3,
we have 7(3) + 5.
Notice that I used parentheses around the 3. It's always a good idea to use parentheses when substituting/plugging in numbers for variables.
Solving from here, 7(3) is equal to 21.
So we have 21 + 5 which is equal to 26.
So the value of our expression
when s is equal to 3 is 26.
