The final price is the cost plus the tax.
Since we know the tax and a percent, we can write this as
T = C(1+r)
T = what Graham paid = $87.45
C = cost before tax
r = tax rate expressed as a decimal = .40
Plugging in what we know
87.45 = C (1+.4)
87.45 = C(1.4)
Divide both sides by 1.4
C = $62.46
Answer:
14%
Step-by-step explanation:
1. The formula to find percent change is
. Now, all we have to do is plug in the values to their corresponding variable.
2. (Solving)
- 14%
Answer:
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Answer:
Hope the picture will help you
Answer:
-4, 4
Step-by-step explanation: