Richie wants to paint his bedroom celling and four walls. The ceiling and each of the was;;s are 8 feet by 8 feet. A gallon of paint covers 40 square feet. Write and expression that can be used to find the number of gallons of paint of paint. Richie needs to buy.

5(8*8) ÷ 40

Step-by-step explanation:

they are all squares so find the area(64sq ft). then multiple 64 by 5 (320). There is a total of 320 sq ft and each gallon covers 40 sq ft. so divide 320 by 40 and you get 8. 8 gallons of paint are needed.

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

i don't know, but that looks pretty bad. my school passed us unless we failed in all the subjects, but idk abt ur school's rules.

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