I would like to help but I need the picture
Slope: -4/10 = 4/-10
<u>Work</u><u>:</u><u> </u><u>y2-y1</u><u>/</u><u>x2-x1</u>
<u>1</u><u>)</u><u> </u><u>1</u><u>0</u><u>-6</u><u>/</u><u>-2-8</u>
<u>2</u><u>)</u><u>4</u><u>/</u><u>-10</u>
Answer: 10 minutes
Step-by-step explanation:
Let x be minutes.
Toatl costs for a call are:
A: 35 + 3x
B: 45 + 2x
When will A = B?
35 + 3x = 45 + 2x
1x = 10
They are equal cost at 10 minutes

adding 3.24 x and 8.37x on the right side:


adding 8.09 to both sides:



dividing both sides by 11.61
Answer : x=1.37