AB is the diameter of a circle. A is (1,3) and B is (7,-1).

(a) Find the equation of the circle. [3]

(b) The line y + 5x = 8 cuts the circle at A and again at a second point D. Calculate the coordinates of D. [4]

(c) Find the area of triangle ABD. [3]

Which of the following best describes the graph below? a. it is a function, but it is not one-to-one. b. it is a one-to-one function. c. it is not a function. d. it is a many-to-one function.

Chose the graph below that represents the following system of inequality’s

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?