Answer:
A) Zero
Step-by-step explanation:
A good way to tell how many solutions there are in a system of equations, is to look at how many times the equations intersect. In this case, the equations don't intersect so there are no solutions.
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A, Is the answer according to my calculations.
Its 30 you find the unit rate by 21÷7 which equals 3 then you multipy 3x10 which gives you 30
$539 - $35 = $504
$504 : 12 = $42
Per month you pay $42.
