Answer:
The number would be a variable like x 80-3x=56
Step-by-step explanation:
80-3x=56
X = 8
80 - 3(x) = 56
-3(x) = -24
$45 dinner = $9
$1 dinner = 45/9= 5
$60 dinner = 60/5=12
Hence he got $12 for a $60 dinner
29 boxes
7+22=29
38
-1•f(-9)+7•g(6)
f(-9) is 4
g(6) = 6
-1* 4+7*6
-4 +42