Leonardo read that his reptile food should be given at a temperature of 72.5°f. he keeps the food in the freezer at –4°f. he has found that if he sets the food on his reptile’s hot rock, the temperature rises 8.5 degrees each hour. how many hours will it take for the reptile food to reach 72.5°f?

72.5 = -4 + 8.5h
76.5 = 8.5h

now divide 76.5 by 8.5

76.5/8.5 = 9 hours

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.