Respuesta :
To find out how many more points Sidney needs to score to tie her record, r, you can use the equation r = 28 − p. For example, when p = 10, you can subtract r = 28 − 10So, when p = 10, then r = 18.
The most points Sidney has scored in a basketball game is 28.
She is trying to tie that record in her current game.
Let r be the number of points needs to score
p is the points she scored already
Total record in basket ball game = 28
points needs to score + scored already = total record
So equation becomes p + r = 28
Subtract p on both sides
So number of points needs to score r= 28 - p