32-x=0; with x equaling the amount descended or -32.
<u>Answer:</u>
37 minutes
<u>Step-by-step explanation:</u>
Lena has 20 dollars. 20 - 12.23 = 7.77
Lena has $7.77 dollars left.
We divide this by .21 to see how many minutes her call was.
7.77 ÷ .21 = 37
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100 divided by 3. i know this because you are spitting the amount to each person
x is timed by .5 in the first one (A) which would make it the linear function.