Hurry i'll pick a !
solve the equation for a.

k = 4a + 9ab

a. a = k(4 + 9b)
b. a = 4(k + 9b)
c. a = 4+9b/k
d. a = k/4+9b

K = 4a+9ab
k = a(4+9b)
k/(4+9b) = a
a = k/(4+9b)

None of the answer choices match what I got, so I'm thinking there's a typo. Perhaps choice A is supposed to say a = k/(4+9b) since that seems like the closest

They are somewhat similar