What fraction or whole number on the number line 1/9 closest to?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

If the discriminant if a quadratic equation is 4 which statement describes the roots?

Agroup of three friends order a combo meal which includes two slices of pizza and a drink each drink is priced at $2.50 the combined total of $31.50 how much is the cost of a slice of pizza