What is the slope intercept form for a line whose slope is 3 and passes through (-4,9)

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?

At 6 1/2 cents per pound of string beans how much does 7 pounds cost

The angles in a triangle are represented by 5x, 8x, and 2x+9. what is the value of ? a.10.8 b.11.4 c.9.7 d.7.2