Step 4 is wrong. the answer is 1/8, she changed sign on 2^(-3) to 2^(3) without moving it to numerator
Answer:

Step-by-step explanation:
Two triangles that are proportional to each other and have the same angle are similar.
Y= 3x + 1
Y = 3x + 3
Y= 3x + 4
Answer:
90 minutes
Step-by-step explanation:
an hour is 60 minutes+ another 30 minutes= 90