Which of the following input-output relationships are functions? SELECT ALL THAT APPLY. A. Input: The side length of an equilateral triangle; Output: The triangle’s area

B. Input: The number of words in students’ essays; Output: The essay scores

C. Input: The time that an airplane has been in flight; Output: The airplane’s altitude

D. Input: The time since depositing money in a savings account; Output: The account balance

E. Input: The amount of time a student studies each day; Output: The amount of time the student sleeps each night

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation:

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)  

answer: 12   they all have at least 28 days

step-by-step explanation: haha