Part 1: The zeroes are -5 with a multiplicity of 2, -1 with a multiplicity of 1, 4 with a multiplicity of 3, 7 with a multiplicity of 1.
Part 2: The possible factored form of the function is (x + 8)^2(x + 1)(x - 4)^3(x - 7)
First part is easy.
180 rows with 328 per row is 180x328=59,040
Now he says 15 hours. So 59040/15=3936
20/100=1/5
1.5/5=0.3
1.50
+0.30
----------
1.8
$1.80 is the answer.
