Set up a proportion
90/x = 60/100
60x = 9000
x = 150
if you're wondering why I used 60 instead of 40 in the proportion it is because $90 is 60% of the original price, not 40%
hope this helps!
Answer:
y = 7.8x² +317x +1
Step-by-step explanation:
Just finished the exam & I got it wrong... copied the correct answer from the review.
9514 1404 393
Answer:
8%
Step-by-step explanation:
The fraction donated was $632/$7900.
As a percentage, that is ...
632/7900 × 100% = 0.08 × 100% = 8%
The store donated 8% of sales to charity.