Suppose ab and cd are rational numbers. is a(c+d)bd a rational number? explain your answer. a. no; the denominator could be 0, so the result may not be rational b. yes; the product, sum, and quotient of rational numbers is always rational, and the denominator is non-zero c. no; a quotient of rational numbers is not always rational d. there is not enough information

Question 3 (essay worth 10 points) (03.06 mc) part a: max rented a motorbike at $465 for 5 days. if he rents the same motorbike for a week, he has to pay a total rent of $625. write an equation in the standard form to represent the total rent (y) that max has to pay for renting the motorbike for x days. (4 points) part b: write the equation obtained in part a using function notation. (2 points) part c: describe the steps to graph the equation obtained above on the coordinate axes. mention the labels on the axes and the intervals. (4 points)