A middle school took all of its 6th grade students on a field trip to see a symphony. The students filled 300 seats, which was 10% of the total number of seats in the theatre. How many total seats were in the theatre?

3000 seats

Step-by-step explanation:

Represent the total number of seats by t.  Then:

0.10t = 300 seats, and:

t = 3000 seats

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10