Ocie's electricity costs (y) per day of usage (x) are modeled below. How much is the electricity bill it Ocie is on vacation all month and doesn't use electricity?
y=85x + 7

I'm being volume of cylinder with 13 in. radius and 30 in height answer choices in pic

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

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?