Answer:
y=2x-5
explanation
m is gradient so rise over run and b is the y intercept which is -5
1. 86/2=43/new price of one shirt
2. 43-15=28/original price of one shirt
Your answer would be $28.
Answer:
No photo?
Step-by-step explanation:
They will be there for 40 minutes because 25+15 is 40
Answer:
multiply the first equation by -2, then add them
Step-by-step explanation:
7x+4y=-4 *-2 7x+4y=-4 *-2 = -14x-8y=8
5x+8y=28
-14x-8y=8 x=-4, y=6
-9x=36
x=-4
7(-4)+4y=-4
-28+4y=-4
4y=24
y=6
