Let T be the tranformation from the uv-plane to the xy-plane defined by the equation x=1/4(u+V), y=1/2(u-v)

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.

40 minutes

step-by-step explanation:

add the time and multiply by 2

the correct answer is c