For the first question, simply plug in the value of 3 into the polynomial question. The final answer is your volume of the hot water tub.
For the second question, you can figure out that x = -5 is not a real root because it does not touch or cross the x axis.
If it does it would be an solution.
You can each order from: Column A- 6 times, Column B- 4 times
Perimeter: 5 + 5 + 5 +5 = 20
area: 5 x 5 x 5 x 5 = 625
Use sin to calculate. Sin30=5/x. Sin=opposite/hypotenuse. Cross multiply. Sin30x=5. x=5/sin30. x=10.
