Please help!
How do you know if the domain or the range of a graph are all real numbers?

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

Solve the equation below: (x+4)/6x=1/x a. x=2 b. x=0,2 c. x=-2 d. x=0,-2

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?