Stephanie is going to paint the walls and ceiling of her bedroom. Her room is 18 feet long, 17 feet wide and 9 feet high. What is the square footage (area) of the walls and ceiling that Stephanie will be painting?

The square footage Stephanie will be painting is square feet. (Enter the number only)

How many gallons of paint does Stephanie have to purchase if each gallon of paint covers 250 square feet?

Stephanie will have to buy gallons of paint. (Remember, you can only purchase a WHOLE number of gallons;Enter the number only)

If each gallon cost $23.75, how much will Stephanie spend on paint?

Stephanie will spend $ on paint. (Enter the number only)

answer: h

step-by-step explanation:

the red lines denote the population of the bacteria after 35 hours. that would be 2,409.24. the y-intercept is the blue line which is 800 because that is the starting point. the equation used to make the graph is 800(1.032)^h, where h is the number of hours.

step-by-step explanation:

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places