What is the value of the expression shown below?
1.6 x 10(5) over 0.2 x 10(2)
a 0.8 10(3)
b 8 x 10(3)
c 0.8 x 10(7)
d 8 x 10(7)

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?