Every year, approximately 25,000,000 kg of hair is cut in the u. s. each kg of hair contains about 0.0002 kg of zinc, and each kg of zinc is worth about 4 dollars. how many dollars worth of zinc is contained in the hair cut in the u. s. annually?

The annual haircut in the United States contains $ 20,000 from zinc

Step-by-step explanation:

1 kg of hair contains ___________________ 0.0002 kg of zinc

25,000,000 kg of hair _________________             X

It means that 25,000,000 kg of hair contains 5000 kg of zinc.

Otherwise,

If 1 kg of zinc _____________ worths $4

5,000 kg of zinc___________    X

X= $20,000

easy math just plug in a and b

step-by-step explanation:

the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

the root or roots of a polynomial are the values of the variable that makes the polynomial equal to 0. we can find the roots of a polynomial making the expression equal to 0 and then, isolating the variable (it it has just one variable).

for example, given the following polynomial:

the root or zero of the polynomial, can be found by making the expression equal to 0, and then, isolating the variable, so, finding the root we have:

therefore, we have that the root of the polynomial is equal to 2.

we must remember that the number of roots that a polynomial can have, will depend on the degree of the polynomial, a first degree polynomial have will have one single root, a second degree polynomial (quadratic expression) may have two roots and so.

hence the correct option is:

b. a value of the variable that makes the polynomial equal to zero.

have a nice day!