(2x - 4)+ ( x + 9)
A. 3x+5
B. x+5
C.3x-13
D. x+9

Which best explains why this triangle is or is not a right triangle?

What are the solutions to the equation 4x2+3x=24-x

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