Expand the expression $4\left(t+6\right)$4(t+6).
A student incorrectly used the distributive property and wrote $7\left(4x+3\right)=28x+3$7(4x+3)=28x+3.
Which of the following is the best explanation to help the student correct their error?
Expand the expression $3\left(6+r\right)$3(6+r).
Expand the expression $\left(r+3\right)\times5$(r+3)×5.
Multiply a polynomial by a monomial involving the same variable to give results up to degree three using a variety of tools