You hike 72 feet up a mountain. the next day, you hike 12 feet down the mountain. write an integer to represent each situation

72 and -12

Step-by-step explanation:

An integer is a number that can be written without a fractional component. For example, 2 and -5 are integers, but 1.5 is not. Taking going up as an increment and going down as a decrement, then hiking 72 feet up a mountain could be represented by 72, and hiking 12 feet down by -12. In this way you can compute your new height as follows: new height = previous height + height variation. For example if you start at 200 m, then your new  height will be: 200 + 72 = 274 feet, or 200 + (-12) = 188 feet

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.

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step-by-step explanation: