Afootball stadium holds 17,700 seats. the lower level has 300 seats less than 4 times the number of seats in the upper level. the middle level has 500 more seats than twice the number of seats in the upper level. let x represent the seats in the upper level. which equation can be used to find the number of seats in the upper level?

a) 7x +200=17,700

Step-by-step explanation:

i did it on ed 2020

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: