Answer:

Step-by-step explanation:
Let
x ----> the number of minutes
y ----> the total charge in dollars
we know that
For x>700 min

so
For y=48.10
substitute

Multiply by 100 both sides
----> equation without decimals
solve for x

To find out the total minutes we need to sum

Answer:
A number is positive if it is greater than or equal to zero. A number is negative if it is less than or equal to zero.
2l + 2w = P
l = 35, P = 84, w=?
2*35 + 2*w = 84
70 + 2w = 84
2w = 84 - 70
2w = 14
w = 14/2
w = 7 in
This means you should do 240*3/8 which is 90. so 90 times 240=21600
the answer is 216000km^2
Answer:
the answers are A D and E