A store pays $22 for a waffle maker and marks the price up by 45%.What is the amount of the mark-up?

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

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

Use the distance formula to find the distance between (-3,5) and (3,1)