There are 12 students in the gym class. If 4 students can sit on 1 bench, how
many benches are needed for all the students?

3 benches

Step-by-step explanation:

GIven:

4 students > 1 bench

1 student > 1/4 bench

12 students > (1/4) x 12 = 3 benches

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart