7 because 7*7*7 equals 343
Answer:

Step-by-step explanation:
Given
(5x - 3y)² = 0, then
5x - 3y = 0 ( add 3y to both sides )
5x = 3y (divide both sides by 5 )
x =
y ( divide both sides by y )
= 
Answer:
A) $2.42, $2.33, $2.58
B) The cheapest deal is 24 for $56
Step-by-step explanation:
Answer:
1:3
Step-by-step explanation:
15/15 = 1 and 45/15 = 3