Charles picked out a new hat for $21 and sales tax is 7.5% what is the total bill he will pay for the new hat

$18.20

21 divided by 7.5 is 2.8 and 21 - 2.8 is 18.20

choice b is correct

step-by-step explanation:

we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .

sorry, i can't understand your question. will later if you describe more clearly!

: )