A painter uses the formula A = 2 h ( l + b ) to find the area of the walls of a rectangular room where h is the wall height, l is the room length, and b is the room breadth. The area of doors and windows are ignored. The question is:
The total area of all windows and doors was calculated as 26.4m2. What is the area of walls only?

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

the correct answer is b. negative exponential growth.

step-by-step explanation:

you can tell it's an exponential function because it decreases rapidly then levels out and never touches the x-axis.

it is negative because the y-axis decreases as the x-axis increases.

therefore it is a negative exponential growth graph.

hope i !