Answer:
The midpoint is 
Step-by-step explanation:
we know that
The formula to calculate the midpoint between two points is equal to

we have


substitute


Answer:
250 minutes with the flat rate of $29.
x would be the number of minutes called.

Tracy would be charged by $0.35 per minute.


I’m not sure what the first one is, but number 4 is A) y=2x+4
Answer:
2=x
Step-by-step explanation:
8(4-x)=7x+2
Distribute
32 - 8x = 7x+2
Add 8x to each side
32 - 8x+8x = 7x+8x+2
32 = 15x+2
Subtract 2 from each side
32-2 = 15x+2-2
30 = 15x
Divide each side by 15
30/15 = 15x/15
2 =x