Use compatible numbers to estimate the quotient 5821/71?

Divide 5821 by 71 

Round the number to the nearest hundred

5821 ÷ 71 → 5800 ÷ 70 

Calculate mentally. 

58 ÷ 7=8.2

Estimated quotient = 8

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:

168

step-by-step explanation:

i am pretty sure that the answer is 168