Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.

21

Step-by-step explanation:

Sales tax is equal to the price times the sales tax rate

Sales tax = price * 5%

                = 20 *.05

                = 1.00

The total price is equal to the original price plus the sales tax

total price = price + sales tax

                 = 20+1

                  =21

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

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 !