Simplify 3a^2 * 5a

Answer 1

To simplify 3a^2 * 5a, we multiply the coefficients (numbers in front) which gives us 3*5 = 15.

Next, we can multiply the variables (letters) and add their exponents. In this case, both variables are "a", so we add their exponents: 2+1=3.

Therefore, the final simplified expression is 15a^3.

Answer 2

A train has x carriages and each carriage has y people in it. How many people are on the train?