The price of a notebook was $3.30 yesterday. today, the price rose to $3.80. find the percentage increase. round your answer to the nearest tenth of a percent.

7.1% subtract the final price by the original price to find the increase and then divide the increase by the original price.

Explanation:

Find the increase

3.75−3.50=.25

Then divide the increase by the original amount

.253.50=.0714285

To change to a percent multiply by 100 and round off to significant numbers

# .0714285 = 7. 14285% or 7.1% or just 7%