1 - (2n + 9) = 4(1-2)

n = -2

Step-by-step explanation:

remove () from equation so its 1-2n-9=4× -1

calculate the differences and multiply

-8-2n=-4

move the constant to the right of the equation  -2n=-4+8

calculate the sum -2n=4 divide both sides of equation by -2  

and boom n=-2

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )