Answer:
Step-by-step explanation:

Mary: x yrs old
Mike: 3x yrs old
In four yrs:
Mary: x+4 yrs old
Mike: 3x+4 yrs old
As the text of task:
3x+4=2(x+4)
3x+4=2x+8
3x-2x=8-4
x=4
Mary is 4 yrs old
The inside of a trapizoid is always 360 degrees. SO 110+ 130 + x + x-3 = 360
240 + 2x - 3 = 360 236 + 2x = 360 2x = 124 x = 62. I'll leave what the other angle is to you but that is the answer. Hope that helps. if you don't get the steps i took just ask!
The measure of angle z is 137
Answer: 1,071
Step-by-step explanation: