1) A salesperson earns a base salary of $2,220 per month and a commission of 6.5% on the amount of sales. If the salesperson has a paycheck of $4,393.60 for one month, what was the amount of sales for the month?

2) let f(x)=2x^2-3 and g(x)=x-2

a) Find the composite function of (fog)(x) and simplify

b) find (fog)(-5)

3) Find the exact solutions and simplify as much as possible: 5x^2 + 6 = 12x