3x - 7 + 7 = 12 + 7
3x = 19
3x/3 = 19/3
X = 19/3 = 6 1/3
Answer: The graph of f(x) is horizontally stretched
Answer
67.5
45° would be the other angle of 2x°
180° - 45° = 135°
135/45 = 67.5°
Answer:

where x = number of adults
y = number of children
and the extra weights of 4kg of each person.