April took out a $600 loan from the bank. at the end of 5 years, she pays back the principal, plus $60 simple interest. what was the interest rate? enter your answer in the box.

April took out a loan of $600 and paid it back with simple interest of $60 after 5 years. The formula to calculate interest is given the principal and the time  and the interest rate is . For this problem we have to find the interest rate  given  . To archive that , we can just solve the equation making the interest rate the subject of the formula as shown below,

The interest rate is or 0.02 as a decimal. The interest rate is 2% as a percentage.

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".