81. use properties of exponents to rewrite each expression with only positive, rational exponents. then find the numerical value of each expression when x = 9, y= 8, and z= 16. in each case, the expression evaluates to a rational number.
a. √xy2/(x3z)1/2

If 3x+8=3x+8 is it one solution or no solution

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)