Radical Functions and Rational Exponents Practice
How can you write the expression with a rationalized denominator? 2+sqrt5 / 2-sqrt5
-9-4sqrt5
Find the real square root of 0.81.
0.9
Let f(x) = x-3 and g(x) = x^2. Find f(g(4)).
13
What is the simplest form of the number? 64^2/3
16
In a tornado, the wind velocity in meters per second can be described by the function v(p) = 12.3 sqrt 1134-3p where p is the air pressure in millibars. What is the air pressure of a tornado in which the wind velocity is 49.3 meters per second? Round your answer to the nearest whole millibar.
373 millibars
Scientists can estimate the number of bacteria in a refrigerated food using the formula 0.2b = t^2/20 where b is the number of bacteria and t is the time in seconds. What was the approximate time a food was in a refrigerator if there were 625 bacteria?
50 seconds
Simplify the radical expression. 3sqrt 125x^9
5x^3
Find the real number roots. sqrt -0.25
no real number roots
Find the inverse of the function. y = -3/x+4
y = -4x-3/x
Which expression is equivalent to the one shown below? (4)^-3 x (2z)^5
z^2 / 2
What function is shown by the graph below?
f(x) = 1+1/2 3sqrt x-2
What function is shown by the graph below?
f(x) = sqrt x+2