1. Find the equation for a line which passes through the points (2, 6) and (4, -8). Write the equation in slope-intercept form. Show work.
2. A salesperson earns a base salary of $1,540 per month and a commission of 7.6% on the amount of sales made. If the salesperson has a paycheck of $4,819.40 for one month, what was the amount of sales for the month? Show work.
3. Let f (x) = 5x2 + 9 and g(x) = x - 4.
(a) Find the composite function ( f og)(x) and simplify. Show work.
(b) Find ( f og ) (3). Show work.