SOLUTION: mia weekly income varies directly with the number lawns she mows. if she earns $143.50 for mowing 7 lawns, how much will she earn if she mows 10 lawns??

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Question 1123763: mia weekly income varies directly with the number lawns she mows. if she earns $143.50 for mowing 7 lawns, how much will she earn if she mows 10 lawns??
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
Same way or same idea as your other two.

Using your direct-variation language, you can start with
y=kx
y, amount of income
x, number of lawns
k, variation constant


k=y%2Fx
143.5%2F7
k=20.5
Your model becomes highlight_green%28y=20.5x%29.


If 10 lawns, just substitute into your formula model and evaluate y.