Match the expression after you replace each variable.

a = 5 b = 6 c = 7

#1 - ab = (5)(6) = 30

#2 - b + 3 = 6 + 3 = 9

#3 - a + b + c = 5 + 6 + 7 = 18

#4 - 3b + 4 = 3(6) + 4 = 22

#5 - 5(5) - 7 = 18  

Step-by-step explanation:

Hope this helps luv!!

i think it is 70

step-by-step explanation:

  or  

step-by-step explanation:

if the four friends split the cost, p, of the pizza evenly, then each friend pays one-fourth of the cost of the pizza.

the expression is   or