Question #c40dd

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Answer 1 · 2017-08-15T21:37:49

42 weeks.

You will have $100 for every week: 100 multiplied by the number of weeks (which is #x#),

Plus the $2000 given to you,

Will equal your savings (which is #y#).

So your equation will be:

#y = 100x + 2000#

Then you need to know how many weeks it will take to have $6200.

This means your savings (#y# value) should be at $6200 after a number of weeks (#x# value).

Substitute 6200 for #y#:

#y = 100x + 2000#

#6200 = 100x + 2000#

Solve for #x#:

#6200 = 100x + 2000#

#6200 - 2000 = 100x#

#4200 = 100x#

#(4200)/100 = x#

#42 = x#

Therefore it will take 42 weeks to save up for a car that costs $6200.