Answer:
d=6
Step-by-step explanation:
divide 30 by 5 to get the value of d
Let the cost of a shirt be s.
Three shirts = 3s.
3s + 15 ≤ 80 (Answer F)
6.938
Discount = Original Price x Discount %/100
Discount = 34.69 × 20/100
Discount = 34.69 x 0.2
You save = $6.94 ~