(-3+0.2x)/5=156 . what is the value of x?

Step-by-step explanation:

first you want to divide the ounces of liquid soap we have by the ounce bottles we have (58.5 / 4.5 = 13 )

so now we know we have 13 bottles of liquid soap

then you want to multiply the 13 bottles of soap by how much they sell each bottle for ( 13 x 5.50 = 71.50 )

the the students would earn $71.50 if they sell all the bottles of liquid soap

hope that helps :)