Water coming out from a fountain is modeled by the function f(x) = -x2 + 6x + 6 where f(x) represents the height, in feet, of the water from the fountain at different times x, in seconds.

what does the average rate of change of f(x) from x = 2 to x = 5 represent?

the water travels an average distance of 4 feet from 2 seconds to 5 seconds.

the water travels an average distance of 1 foot from 2 seconds to 5 seconds.

the water falls down with an average speed of 2 feet per second from 2 seconds to 5 seconds.

the water falls down with an average speed of 1 foot per second from 2 seconds to 5 seconds.

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.