What is the sum of the polynomials
(-x2 + 9) + (-3x2 - 11x + 4)

Select the two pairs of figures that are similar.

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2