How to know a function from a non function

Nine less than a number is between 3 and 8. Find the range of numbers that make this true.

A commercial jet has been instructed to climb from its present altitude of 6000 feet to a cruising altitude of 30,000 feet. If the plane ascends at a rate of 4000 ft/min, how long will it take to reach its cruising altitude?

A white rabbit mates with a black rabbit the offspring is gray in color what type of heredity is this A) subomiance B) codominace C) single gene dominant D) incomplete dominance

What is the slope of a line that is parallel to the line 2x + 4y = 16? Select one or more: A.-3/4 B. - 1/2 C. 1/2 D. 2

14/104 simplest form?

max travels 50 miles in one hour. At this rate, how long will it take him to reach a city that is 650 miles away?

Which property is demonstrated by the following statement? 15+w + (-12) = 15-12+w

9 m 7 m (23 m) What is the area

What are the factors of 34

Find the area of the rectangle 9ft and 14ft