The owner of prophone has charted the company's marginal revenue and marginal cost for its latest line of smartphones, the blazer. use the chart to calculate the company's profit.
how many phones will prophone need to sell to maximize profit?
a) four
b) six
c) nine
d) twelve

answer: d. $20

step-by-step explanation:

just took the test

they go with it happens or they mite give a chance?

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.