20% off means you paid only 80% of the original price.
0.8x=40
x=40÷0.8=50
so the original price is 50
You just do 1/1 then multiply that by 7 which would be 7/7. Then do 7/7 - 3/7 which would be 4/7 (which can not be simplified)
4(10n² - 2) - 5(8n² + 7) =
= 40n² - 8 - 40n² - 35 =
= 40n² - 40n² - 8 - 35 = -43 ← the end
Answer:
Step-by-step explanation:
Given,
Cost without tax = $ 12
Tax percent = 7.5 %
Cost including tax = ?
<u>First</u><u>,</u><u> </u><u>finding </u><u>the</u><u> </u><u>tax</u><u> </u><u>amount</u><u> </u><u>:</u>
⇒
⇒ dollars
<u>Finding </u><u>the</u><u> </u><u>total</u><u> </u><u>cost</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>lunch</u><u> </u><u>including </u><u>tax</u><u> </u><u>:</u>
⇒
⇒ dollars
Hope I helped!
Best regards ! :D
Answer:
C
Step-by-step explanation: