Question

Emmanuel has 745 pictures in his phone. His memory is getting full, so he starts deleting 29 pictures everyday. Define each variable and write an algebraic expression to describe the number of pictures left on his phone after any given number of days.

Answer 1

since you're starting with 745 thats your first number and your deleting 25 pitures everyday so your equation would be

745 - 25x

Answer 2

You can use the following expression to represent the problem:

745-29d

745 → Total/starting number of photos that Emmanuel has.

29 → Number of pictures being deleted everyday.

d → Number/amount of days that pictures were deleted.