Need answer now..need correct answer will mark brainliest..each year, the department of water works measures the chloride concentration level in the water. the first year, they found the chloride concentration changed by −1 3/5 mg/l . it is estimated that the chloride concentration will change −2 1/15 mg/l the next year. what is the total change that will likely occur in 2 years? enter your answer as a simplified mixed number in the box. mg/l

-1 3/5 + -2 1/ 15

get a common denominator or 15

 - 1 9/15 + -2 1 /15

-3 10/15

-3 2/3 mg/L

marco saved more.   he saved $35 more.

step-by-step explanation:

1+2+3+4+5+6+7+8+9+10 = 55

2*10 = 20

55-20 = 35

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: