1. Factor x²+13x²+55x+75 completely if (x+5) is a factor.

2. Find all solutions to 16x³80x²+67x12=0 is one solution. x=4

3. Find all solutions to 8x³+54x²+73x+15=0is one solution. x= -1/4

4. Find all solutions to x³11x²+37x35=0 is one solution. The solutions are x=5x=5, and _____(___)

5. Find f(20)f(0) if f(x)=2600xx³ ________

6. A company can manufacture xx items for a total cost of C(x)=.01x²+7x+600 dollars. How much does it cost to manufacture 200 items? $_____ What about 400 items? $___

7. The revenue realized by a company on the sale of xx units of one of its products is approximated by

R(x)=x³+3x²+200x Compute R(90).