The math club is doing a fundraiser to raise money to attend a math competition. the club was told by their advisor to raise $2000, but they decided to raise $4000. the club is selling " i like tt" t-shirts for $10 and "i like tt" sweaters for $20. let x equal the number of t-shirts sold and let y equal the number of sweatshirts sold. are the graphs of the equations parallel and how can you tell?

number of t-shirts are represented by 't'  

number of sweaters are represented by 's'

Step-by-step explanation:cost of 1t=10 and cost of 1s=20 so

10t+20s=2000 or (factor out the 10 if you optate to simplify)

10(t+2s)=10(200)

divide both sides by 2

t+2s=200

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!