Find HCF of 2x^2-x-1 and 4x^2+8x+3 .

Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

How many $20 bills do you need to have to make $280

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