Respuesta :

you can make the equation 18+16.5x=150 with the info given

to solve this you first subtract 18 from both sides 

18+16.5x=150
-18            -18
16.5x=132

now divide both sides by 16.5 

16.5x=132
/16.5     /16.5
x=8 

therefor she can bring 8 people to the zoo (including herself)