1. The charge for a microwave repair visit was $81.21, including tax. If the tax was $6.70, then how much was the repair visit?

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

What is the y-intercept of the line given by the equation

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.