5.(12-23)what’s the answer to this pls help

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?