Round the following numbers to the nearest 10 and 100: 430 235 675 7876

430= 430 and 400 235= 240 and 200 675= 680 and 700 7876=7880 and 7900

Step-by-step explanation:

when rounding to the nearest ten, look at ones place, when rounding to the nearest hundred, look at tens place

5 or more raise the score, 4 or less let it rest. This tells you whether to round up or round down.

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below: