How do I know if a relation is a function?

1+sec^2xsin^2x=sec^2x

For f (x) = x3 - 7x2 + 8x + 16, a. Find f (10) using synthetic division.

Carlos operates a helicopter. Carlos decides to measure the rotational velocity of the helicopter blades. What would be an appropriate unit for Carlos's purpose? a) meters/second b) degrees/square second c) degrees/second d) meters/square second

Highest common factor of 135 and 180

In which situation is the distance traveled proportional to time? A car moving in stop-and-go traffic A person biking on a trail at 1212 miles per hour for 2020 minutes A baseball hit to center field A race car slowing down after crossing the finish

Choose all of the equations that are equivalent to 8k = 20. A. 8k - 4 = 20 + 4 B. 8k : 4 = 20 : 4 C. 8k * 3 = 20 * 3 D. 8k + 10 = 20 + 10 E. 8k * 5 = 20 : 5

If inflation is 4.44% per year and a car costs $32,600 what would have it been 2 years ago?

Which number can be removed from the following list of data so that the median will remain the same? 80, 32, 55, 50, 46, 71, 60 A. 32 B. 55 C. 60 D. 80

Historically, the percentage of US residents who support stricter gun control laws has been 52%. A recent Gallup Poll of 1011 people showed 495 in favor of stricter gun control laws. Assume the poll was given to a random sample of people.

Find the inverse of the function f (x) = 5/6x + 10