Answer:
a. 20 = 5x + 15
b. x = 1
c. X represents the number of cookies before three more were added to each bag.
Step-by-step explanation:
a. 20 is your total, or y. 5 is the amount of bags, with "x" cookies. Three more cookies are added to EACH bag, so 3*5 is 15. If you do it in slope-intercept form, the equation is 20(y)= 5x + 15 (added cookies).
b. 20 = 5x + 15
20 - 15 = 5x + 15 - 15
5 = 5x
5/5 = x
x = 1
c. Remember that x is the amount of cookies in each bag before three more were added. If you add the amount before more were added (1), and the amount added (3), you get 4. Then, you multiply the total amount of cookies in each bag and the number of bags (4*5), you get 20, which the problem says is the total number of cookies in all the bags.
hope this helps :)
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