# Math...Help.Thx

20. READING: The number of pages P a student can read varies directly with the amount of time T in minutes spent reading. The student can read 90 pages in 60 minutes. Write an equation that relates P and T. PREDICT the number of pages the student can read if 90 minutes is spent reading.

21. MOVIES: The Cost C of going to the movies varies directly with the number N of people attending. A group of four paid \$14 to go to the movies on Friday. Write an equation that relates C and N. How much would it cost for 7 people to go to the movies?

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1. CAN SOMEONE HELP ME PLEASE? STRUGGLING WITH BOTH OF THESE ?'s... PLEASE HELP!!! Merci.

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posted by Jake
2. P = k T
90 = k (60)
k = 9/6 = 1.5 pages/min

if T = 90
P = 1.5*90 = 135
=====================
C = k N
14 = k (4)
k = 14/4 = 7/2
so
C = 3.5 N
if n = 7
C = 3.5 * 7 = 49/2 = 24.5

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posted by Damon
3. I got something different but I'll figure out how you got that. Thankyou.

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posted by Jake

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