Find two numbers the quotient is between. Then estimate the quotient. 70 ÷ 3

Multiply 3 by multiples of 10 to estimate the quotient. The quotient is between
and
.

The estimate for the quotient is
.

Factor p 2 + 18p + 32. (p+ 4)(p + 8) (p + 2)p+ 16) (p + 16)2

How do you solving the solution of each system using elimination?

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.