Find the maximum profit that a company can make, if the profit function is
given by
p(x) = 41 – 72x – 18x2
7 Find both the maximum value and the minimum value of
3x4 – 8x3 + 12x2  – 48x + 25 on the interval [0, 3] 8 At what points in the interval [0, 2π], does the function sin 2x attain its maximum
value