Agroup of 72 students went on a field trip; the students traveled in vans, with an equal number of girls & boys in each van. if 42 boys went on the trip; how many vans were there

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

What is the surface area of the sphere?

Hurry!me out! m c 8 10 12 gracie's art box has 5 less crayons, c, than three times the number of markers, m. function: c = 3m - 5 complete the table to show how the number of crayons depends on the number of markers. enter answers in order from top to bottom.