Answer:
$0.23
Step-by-step explanation:
5 ounces cost $1.15
1 ounce cost $1.15/5 = $0.23
Width, RS = 5x - 7 m
x^2 - 6x + 9
(x - 3)^2
(x - 3)(x - 3)
x^2 - 3x - 3x + 9
20
400 is 20 square= 20*20
so 20 students in each row
