L is a straight line with a negative gradient. the circle C and the line L intersect at the points A and . the coordinates of A are (-9,2). the x coordinates of B is 7. find the equation of L

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Which point lies on a circle with a radius of 5 units and center at p(6, 1)?

Ineed i been stuck on this question since yesterday