A cell phone plan is shown at the right. The rates
, which include an unlimited data plan, are the
same each month for 7 months. The total cost for all 7 months
is 180.39. Let m represent the average number of minutes that
exceeds 700 minutes each month,
a. Write an equation to represent the given situation.
b. Solve the equation to determine how many additional
minutes, on average, you use each month.

c. y = 1/4 x + 5

step-by-step explanation:

first, put the equation of the line on the graph into slope-intercept form

(y = mx + b):   y = -4x + 8

second, a perpendicular line has to have "an opposite/reciprocal slope" to the original slope. so, find the "m" value in your original equation (it's -4, right? )

original slope: m = -4   perpendicular slope: change the sign to its opposite and find the reciprocal ("flip" the number)

new slope is now positive (b/c the original slope was negative 4), and it's 1/4 (not the original slope of 4 or 4/1)

180-142=38 for the acute angle next to the entry

90+38=128

180-128=52

a=52

step-by-step explanation:

3

step-by-step explanation: