G(x)= 33/x −x^2at x=a+b,

33/x - x^2 where x = a + b

33/(a + b) - (a + b)^2

d/da(33/(a + b) - (a + b)^2) = -2 (a + b) - 33/(a + b)^2

Step-by-step explanation:

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a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation:

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: