Suppose f(x) is a function such that if p of(x) can be odd or even.
of(x) can be odd but cannot be even.
of(x) can be even but cannot be odd.
of(x) cannot be odd or even.

2-digit numbers less than 91 which are 1 less than a multiple of 10

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

The salesperson earns a 5% commission on the first $5,000 she has in sales. the salesperson earns a 7.5% commission on the amount of her sales that are greater than $5,000. this month the sales person had $8,000 in sales. what amount of commission, in dollars, did she earn?