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krek1111 [17]
3 years ago
8

???????????????????????????? Please answer ASAP. Very much appreciated. ❤️❤️❤️❤️

Mathematics
1 answer:
tankabanditka [31]3 years ago
3 0
She needs to earn at least 84 to buy the mp3 player

earnings=earningsperhour times numberofhoursworked

earnings per hour=12 dollars
number of hoursworked=h

therefor
earnings=12 ties h or12h

earnings is at least 84
earnings is greater than or equal to 84
earnings<u>></u>84
12h<u>></u>84

solve
12h<u>></u>84
divide both sides by 12
h<u>></u>7
she needs to work at least 7 hours

to graph, draw a line at x=0 and shade to the right, make the line solid
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