Respuesta :
Answer:
- expression: y = 31 - p
- He scored 24 points in the first half.
expression:
first half points + second half points = total points obtained
Let first half points be y
y + p = 31
y = 31 - p ......this is the expression.
solve:
y = 31 - p
y = 31 - 7
y = 24 points