im assuming the 4 is an exponent, so (2 * 3 * 7)^4 = 2^4 + 3^4 + 7^4 because of the distributive property. the ^4 gets distributed to everything inside of the parentheses.
Answer:
b plus 3 is equal to b squared
5,200 you round it to 5,200
I think the third option is correct
B. Y=7x.
21 divided by 3 = 7
