When multiplying or dividing a NEGATIVE and a POSITIVE, your answer will be... (if you spell it wrong, it will mark it wrong. I will go through and correct it if I need to)

Both are negative

Step-by-step explanation:

If multiplying= It will always be negative

If dividing= It will also always be negative

There are two simple rules to remember: When you multiply a negative number by a positive number then the product is always negative. When you multiply two negative numbers or two positive numbers then the product is always positive.

When dividing negatives and positive number be sure to court the signs. If there are two negatives then they will cancel each other out, so if you have an even number (or zero) of negative signs then the answer will be positive

step-by-step explanation:

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.