When looking at an equation how do you know if it is a function?

The volume of a fish tank is 40 cubic feet. If the density is 0.4fish over feet cubed, how many fish are in the tank? 16 4 100 10

Alice skates 2/5 mile in 1/5 hour. Elizabeth skates 2/3 mile in 2/9 hour. who skates futher in 1 hour

You get tired of the sand and head up to the amusment park you can purchase 20 ride tickets for $14 or 30 ride tickets for 22.50 which is the better deal

Evaluate each function. 16) w (x) = x + 1; Find w (-9)

Which of th following phrases can be used to represent - 11 A) positive eleven. B) the opposite of - 11. C) eleven greater than zero. D) eleven below zero.

Round 4.051 to the nearest hundredth

Round 4.88 to the nearest tenth

Write 24 over 5 as a mixed number

Using the intermediate value theorem, determine, if possible, whether the function f has at least one real zero between a and b. f (x) = x^3+4x^2-6x-6 a=-6 b=-4

Jose bought a wallet for $19.95 and y hats for $5.99 each. Which of the following expressions shows the total amount of money he spent? Select one: a. 19.95y + 5.99y b. 19.95y + 5.99 c. 19.95 + 5.99y d. 19.95 + 5.99 + y