What number should the fraction 15/3 be multiplied by in order to equal 1?

Guys i need ! graded assignment grade 8 checkpoint 2, part 2 answer the questions below. when you are finished, submit this assignment to your teacher by the due date for full credit. total score: of 9 points (score for question 1: of 4 points) 1. the cost of renting a car for a day is $0.50 per mile plus a $15 flat fee. (a) write an equation to represent this relationship. let x be the number of miles driven and y be the total cost for the day. (b) what does the graph of this equation form on a coordinate plane? explain. (c) what is the slope and the y-intercept of the graph of the relationship? explain.

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122

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