Write and equation of a line that passes through the points and is PERPENDICULAR to the given line.
4.(-2,-2);y=-1/5x
5.(4, -1); y = 2x - 4
6. (-3, 5); y = 3/4x-4

Aquantity with an initial value of 3900 decays exponentially at a rate of 35% every hour. what is the value of the quantity after 0.5 days, to the nearest hundredth?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?

Which graph represents the linear function below? y-4= (4/3)(x-2)