21. The demand equation for a certain product is given by the formula
p = 50-√.001x + 1
where x is the number of units sold in a month and p is the price per unit.
a) Write an equation to determine the expected number of units sold if
the price of the product is $24.50.
b) Solve the equation.
22. an amusement park charges $15 for admission and 3.50 per ride
a) write an inequality to describe how many rides you can go on if you bring $64 to the amusement park.
b) solve the inequality. Write the solution in interval notation.
