( 7x + 2x - 3x2 + 9x) + (5x + 8x2 - 6x2 + 2x - 5)

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30