If i bought something for $20 and there was 7% tax, how much would i pay in total?

$21.40

Step by step explanation:

Set up a proportion

20 • 7 = $140

140/100 = $1.40

Add the tax to the subtotal.

1.40 + 20 = $21.40

$21.40

Step-by-step explanation:

tube or goog would be a great resource to with that question

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is