Answer two questions about Equations A and B: A. 5x=20
B. X=4
1) How can we get Equation B from Equation A?
Choose 1
Multiply/divide both sides by the same non-zero constant
Multiply/divide both sides by the same variable expression
Add/subtract the same quantity to/from both sides
Add/subtract a quantity to/from only one side

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step-by-step explanation:

d is the answer

step-by-step explanation:

what shape is

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.