Linda planned to spend 9 hours practicing piano this week. By tuesday, she had spent 2 1/2 hours practising. How much longer does she need to practice to reach her goal?

Draw a tape diagram to represent each situation.for some of the situations,you need to decide what to represent with a variable andre bakes 9 pans of brownies.he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

You receive 15% of the profit from a car wash how much money do you receive from a profit of 300

Ireally need subtract and simplify.(-y^2 – 4y - 8) – (-4y^2 – 6y + 3)show your work, ! i will mark you brainliest but you have to show your work.