Answer:
x=90
Step-by-step explanation:
Answer:
Y inter=4
Slope= -5/2
Step-by-step explanation:
First find the slope y1-y2/x1-x2
Find two points (0,4) and (2,-1) Subtract 4-(-1)/0-2
-5/2 The y intercept is 4 because thats where x is 0
So the the equation is y=-5/2x+4
Where -5/2 is slope and 4 is Y intercept
So 6.00 - .99 = 5.01 which give 20 mins
5.01 divided by .07 a min = around 71.5
20 + 71.5 is 91.5, so she can talk for about 91 full mins