An electronics store chain sells headphones. The company is about to introduce a new headphone model that is expected to sell very well across its various stores. These are the projected revenue and cost functions for the headphones: R(x) = -210x2 + 6,970x
C(x) = -170x + 39,690

Which two statements are true?

The maximum profit is $57,834.
The maximum profit is $21,000.
A selling price of $27 results in the maximum profit.
A selling price of $17 results in the maximum profit.
A selling price of $16.60 results in the maximum profit.

"a" determine whether sage found the correct quotient. show your work

step-by-step explanation:

part a: triangles gcb and epb

part b. sides cg and rp are parallel by definition of parallelogram.

angles cgb and e are congruent by being alternate interior angles of parallel lines cut by a transversal. angles gbc and ebp are congruent because they are vertical angles. by aa similarity, the triangles are similar.

part c. since the triangles are similar, the ratios of the lengths of corresponding sides are equal.

calculation of be:

gb/be = cb/bp

(400 ft)/be = 300/200

(400 ft)/be = 3/2

3be = 2 * 400 ft

3be = 800 ft

be = 800/3 ft

calculation of pe:

gc/pe = cb/bp

(350 ft)/pe = 300/200

(350 ft)/pe = 3/2

3pe = 2 * 350 ft

3pe = 700 ft

pe = 700/3 ft

130 degrees. i have no other way to explain