Question

One day your aunt gave you 20 pieces of candy and you ate 2 pieces each day. After a
certain number of days, there are 10 pieces left. Which of the following equations
represents the day, d, when there are 10 pieces left?
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Answer 1

Answer:

5

Step-by-step explanation:

on day 1 you had 20 pieces and each day you lose 2 pieces. so that means your equation is y=-2x+20. So x = number of days, and y = pieces of candy. Plug in 10 for y, minus 20 to both sides, divide by -2 to each side. Then your answer is 5.