gennhill14
09.07.2019 •
Mathematics
1. melissa bought a new car with 12 optional features to the car. each optional feature costs either $23.99 or $120.84. if she paid $675.28 for all the optional features, how many of each type did she buy? write and solve an equation to solve this problem. show all your work.
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Ответ:
becomes 12-x:
Amount paid:
(23.99).x + 120.84(12-x) = 675.28
23.99.x + 1450.08 - 120.84.x = 675.28
- 96.85,x = 675.28 - 1450.08
-96.85.x = - 774.8
96.85.x = 774.8
x = 774.7/90.94 → x = 8 (1st option) and 4 (2nd oprion)
Ответ:
Step-by-step explanation: