Identify the property demonstrated: 4^3 • 4^7 = 4^3+7 a. product of powers property b. quotient of powers property c. power of a power property d. power of a product property

With #! i’ve tried to figure it out but i can’t.

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Frank owns a $141,000 home, for which he has a 30-year mortgage in the amount of $700 a month. once he has paid off mortgage, how much will he have paid in investment? a. $111,000 b. $109,000 c. $120,000 d. $141,000