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Fittoniya [83]
3 years ago
9

I need to find and write the equation for the problem.

Mathematics
2 answers:
Julli [10]3 years ago
7 0
0.8p - 50 < = 150
0.8p < = 150 + 50
0.8p < = 200
p < = 200/0.8
p < = 250

the reason I set it up this way is because when it is 20% off, u r actually paying 80% of the original price (p)....80% of the original price is written as 0.8p...then u subtract ur 50 dollar discount coupon...- 50.....and if all she can spend is 150....it would be less then or equal to 150. So the most she can spend on the phone is 250

Firdavs [7]3 years ago
7 0
(p-20/100p)-50 =80/100p-50 =4/5p-50
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