Please help with step by step if you can

m<1 = 20°

Step-by-step explanation:

m<L = m<Z = 70°

=> m<1 = 180° - 90° - m<Z

=> m<1 = 180° - 90° - 70°

=> m<1 = 20°

question: how many people can she serve?

answer: she can serve 16.66666667 people. so she can only give 16 people a complete serving.

question: does she have enough ice cream for her guests?

answer: no. explanation: she only has enough for 16 people to have a full serving. however, she can give a 17th person a partial serving.