studyowl1087
25.09.2019 •
Mathematics
Ta telephone company offers a monthly cellular phone plan for $ 24.99$24.99. it includes 350350 anytime minutes plus $ 0.25$0.25 per minute for additional minutes. the following function is used to compute the monthly cost for a subscriber, where x is the number of anytime minutes used.
upper c left parenthesis x right parenthesis equalsc(x) =
24.9924.99
if 0 less than x less than or equals 3500 < x ≤350
0.25 x minus 62.510.25x−62.51
if x greater than 350x > 350
compute the monthly cost of the cellular phone for use of the following anytime minutes.
(a) 200200
(b) 410410
(c) 351351
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Ответ:
Ответ:
Cross multiply
800x = 106(130,000)
800x = 13,780,000
Divide both sides by 800
x = 17,225