20 is the lowest of the upper 3 numbers, so the missing number must be 19 when averaged with 20. That is, the missing number must be ...
2*19 -20 = 18
-4(v+1)
mutiply the bracket by -4
-negative sign and +positive sign= -negative sign
(-4)(v)= -4v
(-4)(1)= -4
Answer:
-4v-4
I think the x-intercept will be (16/3,0)
AND the y-intercept to be (0,4)