Answer:
x≤30
Step-by-step explanation:
he can spend no more than $30 a week
11)
3x = 180
x = 60
12)
6x + 18 = 180
6x = 162
x = 27
5 shirts for $21
the 6 deal would be $4.25 for each shirt
4 deal would be $4.50 for each shirt
and the 5 deal is the cheapest because its $4.20 for each shirt
$4.20, 2.73/65 >>> .042 x 100 >>> answer.
Bonus:
To check it you'd do 4.20/20, then multiply .21 by 13 (65% divided into 5% portions = 13 portions) and your answer will be $2.73.