Can any kind soul help me

x^2+2hx+4=x

=>x^2 + 2hx +4 -x = 0

=> x^2 +hx + 4 =0

For one root, the roots have to be equal, so the discriminant = 0

b^2 - 4ac = 0

=> h^2 - 4(1)(4)=0

=> h^2 -16 = 0

=> h^2 = 16

Therefore h = 4 :)

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: