4x+2y-6z-x-3y+2z= 3x-y-4z
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A.


cost is $16.50
B.

rearrange to solve for t:

C. This is the same as part B, only the rate changed

they ask for the greatest number of minutes, so we round down (take the floor of the value).
the answer is 105 minutes.
Answer:
$191.69
Step-by-step explanation:
0.065 x 179.99 = 11.70
179.99 +11.70
There are many equations that has a constant of
proportionality, might want to make it more specific.
He made his mistake in Step 2. Tom should have subtracted 4/8 instead of 1/8. The mistake is that he was not consistent when he multiplied Denominators (bottom number) must be the same when handling fractions so Tom must multiply both the numerator and denominator by the SAME number to balance it out. 1/2 x 4/4= 4/8. Subtract. 7/8 - 4/8= 3/8. Tom has 3/8 of a gallon of paint leftover.