Math and answer please than you

What is a rational number between 9.5 and 9.7

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

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