Suppose a 5-minute overseas call costs $6.45 and a 10-minute call costs $11.40. The cost of the call and the length of the call are related. Write an
equation to show the cost of a call for any duration. Approximately how
long can you talk on the phone if you have $51 to spend?

whew you’re speaking a different language

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

umm you say your want to . but you do know that this is the mathematics.  

o~o