Topic: Coordinate Geometry Points P(-6,2), Q(2,-2) and R (-3,r) are collinear or lie on a straight line. Find the value of r.

What is the value of x in the this question ?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 - 4x - 5 = 0

Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?