1- ABD
2- BC(with and arrow drawn above because it’s a ray) and BE (with and arrow drawn above because it’s a ray)
3- x=18
4- ABD=32
5- ABC=162
6- x=19
7- ABD=23
In this question, you're solving for x.
Solve for x:
x + 4.2 = 7
You need to get x by itself, to do so, you would need to subtract 4.2 from both sides:
x = 2.8
Answer:
x = 2.8
Only 25 and 28 are functions.
A function must have only one y value per x value. For 26, the y value of 0 and multiple others have two different y values. For 27, all x values less than 0 have multiple y values.