Which expressions result in a negative number? choose all answers that are correct. a. –84 ÷ 21 b. c. –7.3 – (–4.3) d. –4.2 • (–3.5)

What is the simplified form of 7 √x • 7 √x • 7 √x • 7 √x?

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.

Acompany made a profit of 75000 over a period of 6 years on an initial investment of 15000 what is the annual roi