I need help solving this radical equation with box or foil method

Step-by-step explanation:

Using the FOIL method:

Simplify the expression by squaring:

Now we can use the Foil method:

First, Outside, Inside, Last

Multiply the first terms within each grouping:

Insert as the first term:

Now multiply the outside terms in each grouping:

Insert as the next term:

Now multiply the inside terms:

Insert as the third term:

Now multiply the last terms in the grouping:

Insert as the last term:

Simplify by combining like terms:

:Done

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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: