Answer:
a = 5
Step-by-step explanation:
If it's easier for you, you can replace n(a) with y and put a as x.
Now the equation is y = 7x + 4.
It asks you to put in 39 as y.
39 = 7x + 4.
To solve this, the goal is to isolate the variable on one side. The first step I see is to subtract the 4 from both sides.
35 = 7x
Now divide both sides by 7 and we're done!
5 = x
1.25 or 1 1/4 however you want to look at it
<span>D) There is not enough information to know if any of these is true.</span>
B = ym + y
B - y = ym
(B - y) / y = m
or
B/y - 1 = m
