Which statement is true about the given function? f(x) > 0 over the interval (–infinity, 3).
f(x) > 0 over the interval (–infinity, infinity).
f(x) < 0 over the interval (–infinity, 3).
f(x) < 0 over the interval (–infinity, infinity).

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

step-by-step explanation:

12 minutes