X(x+3)-7(x+3)
x2+3x-7x-21
x^2-4x-21
there is no answers to choose from sorry
R=7/5
You can list two equations:
2s+10r=42 and 4s-10r=42.
Then try to delete S, you will get r
Answer:
$20 per clock
Step-by-step explanation:
A shipment has:
Fixed Cost = 225 (one time)
Variable Cost = 11 per clock
If there are x clocks in a shipment, total cost would be:
Total Cost = Fixed + Variable
Total Cost = 225 + 11x
If there are 25 clocks in a shipment (x = 25), the total cost would be:
Total Cost = 225 + 11(25) = $500
To break even, you must raise $500 from the 25 clocks, so how much would you need to charge??
500/25 = $20 per clock
525/7=75 mph
525/5=105 mph
Mary would need to drive 30 mph faster to make the same trip in 5 hours
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