If five notebooks cost $5.25, how much would three notebooks cost? show your work

What kinds of numbers make up the set of numbers called the real numbers? give examples when you explain a number type. there are a limited set of types of numbers, but an unlimited number of examples of these numbers.

Which statement about the graph of y = 8(0.25)^2

Measures of the angle of r, 31 s (x+4) t (3x+9)