Answer:
Step-by-step explanation:
given that the expression is
f(x)=1.5x+7
the expression is the cost
Reece has a total of $12
and that x represents the number of game
let us solve for the cost for 8 games
f(x)=1.5(8)+7
f(x)=12+7
f(x)=19
the cost of 8 game is $19
since he has $12 he need extra 19-12= $7