300 hotdogs and hamburgers total costing $780. Hotdogs cost $2. Hamburgers cost $3. How many hamburgers? How many hotdogs?

5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?

Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?

W-16=-12 solve each one step equation plz