Write an explicit formula for the nth term or the sequence 8,-24, 72

Step-by-step explanation:

Given

Required

Determine the n term

The above sequence is geometric. So, we calculate the common ratio first:

The equation is then calculated using:

Where

and

The equation becomes:

Apply law of indices:

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: