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.

e) none of the above because the measure of angle cba is 101°

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.