Icant figure out question 18 ! i keep getting 88. but idk if thats right

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !

Find an equation for the linear function which has slope -10 and x-intercept -7

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students