9 children win $20 each. Then the same 9 children win $10 each. How much combined money did each child win

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?

The cost of using a service is $0.25 per min. what equation correctly represents the total cost c, in dollars, for d days of use?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2