Pls help me with this i will give to first answer

= 4

= 8

= 1

Step-by-step explanation:

• • = 64

= 4 because when 4 is being multiplied by itself 3 times, it equals 64

Now we know the value of so lets move on to the next question

+ + = 20

4 + + = 20

+ = 16

= 8

+ + = 12

8 + + = 12

+ = 4

= 1

+ + = ??

1 + 8 + 4 = ??

13 = ??

Line ab is y = -7/5x + 56/5i don't understand  where point d comes into this.