The preschool class has 18 students in the 3-year-old class. There are 3 full-time teachers and I hall-time teacher for this group of children. What is the ratio of students per teacher rounded to the nearest whole number?
AGI
C. 3:1
D. S:1

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.