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x = -21.

Step-by-step explanation:

x/7 + 8 = 5

-8 | -8

x/7 = -3

* 7 | * 7

x = -21

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Hope this helps!

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225