If y=10 and d=126, then what is the value of z?

Afrequency table of grades has five classes (a, b, c, d, f) with frequencies of 3, 13, 14, 5, and 3 respectively. using percentages, what are the relative frequencies of the five classes?

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose