4x + 1 = -3
"The product" is the term used to describe the answer of a multiplication equation.
"increased by" means you're adding.
"a number" refers to a variable.
Step-by-step explanation:

Answer:
A. 810
Step-by-step explanation:
All you need to do here is add the number of children between ages 0-10 and children of ages between 10-20.
500+310= 810
Hope this helps! :)
Answer:
100
Step-by-step explanation:
mode : the most common number that appears