What is domain? what is range? how do you get from one to the other?

The domain is the set of all possible x-values which will make the function "work", and will output real y-values.  (Minimun x value to maximum x value)

The range of a function is the spread of possible y-values (minimum y-value to maximum y-value)

Step-by-step explanation:

When trying to find the domain and range from a graph, the domain is found by looking at the graph from left to right.  The range is found by looking at the graph from top to bottom.

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet