A proposed change in income tax suggests charging 25% on a person's income up to $42,000 and then 40% on any income above that. If a person has an income of $68,000, what will their income tax be under the proposal? Round your answer to the nearest dollar.

$20,900

Step-by-step explanation:

-The income tax is 25% on first $42,000 and 40% on all amounts greater than $42000

#Tax on first $42,000:

#Tax on the income balance will be:

Total income tax=10400+10500=$20,900

Hence, the proposed income tax will be $20,900

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

m∠a is 90°

m∠b is 40°