Answer:
Part B: $544.5
Step-by-step explanation:
PART B:
The area of the carpet is the product of its dimensions:
.
The carpet costs $2.00 per ; therefore, the total cost of the carpet will be
.
Also, the installer charges $0.75 per to install the carpet; therefore, the total cost of installation will be
.
Thus, the total amount it will cost Amy to buy the carpet and have it installed will be
10% of 140 is 14.
to solve you first must do 10/100 = 14/x
cross multiply and you get 10x = 1400
divide 1400 by 10 and you get 140
Answer:
See below.
Step-by-step explanation:
Plot some points:
y = 4^x
When x = 0 y = 4^0 = 1 so the graph passes through (0,1).
x = 1, y = 4^1 = 4 so it passes through (1,4).
You can plot a few more points for x = 2 and x = 3 . You'll see that the graph rises at a fast rate for positive values of x.
When x = -1 , y = 4^-1 = 1/4
x = -2 , y = 1/16
x = -3, y = 1/64
Thus, for negative values of x, the values of y rise slowly from close to y = 0 to meet the y axis at y = 1. When x approaches negative infinity y is very close to 0 but never is 0.
(x^2 - 9)(x + 2) = 0
(x - 3)(x + 3)(x + 2) = 0
As any of the 3 above factors can equal zero the solutions are
x = 3, -3 , -2.
So the answer is E.