Which function has a vertex at the origin? f(x) = (x + 4)2
f(x) = x(x – 4)
f(x) = (x – 4)(x + 4)
f(x) = –x2

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?

What integer is equivalent to 9 3/2

The sum of two consecutive mile markers on the interstate is 417417. find the numbers on the markers