Question

Simplify: (7ty) (3t)
A. 10 ty
B. 21 ty
C. 10t ²y
D. 21t²y ​

Answer 1

Answer: D. 21t²y

Explanation:

Step 1: Distribute the numbers and variables inside the parentheses:

(7ty)(3t) = 7ty * 3t

Step 2: Multiply the coefficients (numbers) together:

7 * 3 = 21

Step 3: Multiply the variables with the same base (t) together by adding their exponents:

ty * t = t^(1+1) = t^2

So, the simplified expression is:

21t²y

Therefore, the correct answer is:

D. 21t²y