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elena-s [515]
3 years ago
13

Emanuel has 745 pictures in his phone.His memory is getting full so he starts deleting 20 pictures every day.Define each variabl

e and write an algebraic expression to describe the number of pictures left on his phone after any given number of days.
Mathematics
2 answers:
Solnce55 [7]3 years ago
7 0

Answer:

745-20d

Step-by-step explanation:

Let d represent number of days.

We have been given that Emanuel starts deleting 20 pictures every day. The number of pictures deleted in d days will be 20d.

We have been given that Emanuel has 745 pictures in his phone. The number of pictures left after d days would be initial number of pictures minus number of pictures deleted in d days.

745-20d

Therefore, the expression 745-20d represents number of pictures left on Emanuel's phone after any given number of days.

IceJOKER [234]3 years ago
3 0
One variable is the amount of days. Lets call the amount of days D. Another variable is the amount of pictures left. Lets call this p. In this case, since Emanuel is deleting 20 pictures a day, and he has 745 picture to start with, the equation would be 745- 20D=p. 
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