Okay, let's find out how much the tax was by finding out what 7% of $28 is, we do this by multiplying:

Convert 7% into a decimal, we do this by dividing it by 100 because percentages are parts of 100:

Multiply:

So this is the tax. Add it to the original price to get the total price:
If there is 4 thousands and 7 hundreds is 4,700
Answer:
-8a^2 + 9a
or
9a - 8a^2
the answer is c
Step-by-step explanation:
3. 18 square yards
4. 1,200 square feet
5. 405 square inches
6. 84 square meters
7. 343 square yards
8. 0.125 square centimeters