What is the image of point A(4,2) after a transformation of R{90} followed by r_{y=x)?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

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