As a valet at the mall, davis works 7-hour shifts. he earns $6 per hour and keeps 90% of his tip money. how much does davis need to be tipped so that he takes home exactly $87.50, before taxes are deducted, per shift?

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.

Me i’m stuck on all these questions besides the two bottom ones

Pleasseee important quick note: enter your answer and show all the steps that you use to solve this problem in the space provided. use the circle graph shown below to answer the question. a pie chart labeled favorite sports to watch is divided into three portions. football represents 42 percent, baseball represents 33 percent, and soccer represents 25 percent. if 210 people said football was their favorite sport to watch, how many people were surveyed?