There are 16 students in a class. each student has either a bicycle or a tricycle. there are exactly 37 wheels altogether. how many bicycles do the students have?

x = number of students that own a bicycle

 16-x = number of students that own a tricycle

total wheels = number of bikes x 2 and number of tricycles x 3

you get 2 * x +3 *(16-x) = 37

2x +48-3x = 37

-x = -11x = 11

 11 students own bicycles and 5 own tricycles

no i do not : ( what is it?

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy