Find the amount of sales tax and the total cost. Complete the table below.
Cost of Item
Tax Rate
Amount of Tax
Total Cost
$6
5%


Cost of Item
Tax Rate
Amount of Tax
Total Cost
$6
5%
$
nothing
$
nothing
(Simplify your answer. Round to the nearest cent as needed.)

Cost of item : $6

Tax rate : 5%

Amount of tax =  $0.3

Total cost = $6.30

Step-by-step explanation:

Cost of item : $6

Tax rate : 5%

Amount of tax = 5% * $6 = 0.05*6 = $0.3

Total cost = $6 + $0.30 = $6.30

its the fourth option

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct