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: D=16km
r=8km
circumference of a circle= 2πr
= 2*3.14*8
=50.24km
P.S 3.14 is used as the value for π (pie)
Step-by-step explanation: