Diana invests $25,000 in a bank at the beginning of the year. she will receive 7% interest at the end of the year, but she will have to pay a 16% tax on the interest received. a.) how much interest will diana earn after she pays the tax? b.) what percent of diana's investment is the interest after paying the tax?

A) $1470

B) 5,88%

Step-by-step explanation:

B) Diana will end up with 100% -16% = 84% of the interest she earns, so her effective interest rate is ...

... 7% × 84% = 5.88%

A) Diana's investment earns ...

... 0.0588 × $25000 = $1470

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".

step-by-step explanation: