For School: Practice & Problem Solving 5.7.PS-
Question Help
The price of a 6-minute phone call is $1.80. What is the price of a 15-minute phone call?

answer: i think it is (1,-2)

step-by-step explanation:

no solution.

secant-secant formula:

(whole secant) x (external part) =           (whole secant) x (external part)

(8+y-2) *8=                                           (y+4+6) *6

(y+6)*8 = (y+10) *6

distribute

8y+48 = 6y +60

subtract 6y from each side

2y +48 = 60

subtract 48 from each side

2y = 12

divide by 2

y = 6

sv =     (y+4+6)

sv   = 6+4+6

sv = 16