expand the expression. 3(2.1c + 1.3) ?c + enter the coefficient.

expand the expression. 3(2.1c + 1.3) ?c + enter the coefficient.
Answer
Explanation:
Step1: Apply distributive property
$3\times(2.1c + 1.3)=3\times2.1c+3\times1.3$
Step2: Calculate the products
$3\times2.1c = 6.3c$ and $3\times1.3 = 3.9$
Answer:
$6.3c + 3.9$