X = 7
y = 10
x + y = 700
7x + 10y = 6400
10x + 10y = 7000
(-) 7x + 10y = 6400
______________
3x = 600
x = 200
200 + y = 700
y = 500
Answer:
base=6
Step-by-step explanation:

Answer:
depends on what the price of the bicycle is and the discount percentage
Answer:
A and D
Step-by-step explanation:
Hope this helps!