All 231 students in the math club went on a field trip. some students rode in vans ehich hold 7 students each and some students rode in buses which hold 25 students each. how many of each type of vehicle did they use if there were 15 vehicles total?

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.