What's the answer will award brainiest

Step-by-step explanation:

4ˣ - 2 = 7

4ˣ  = 7 + 2

4ˣ  = 9

x = log₄ 9

(n^3 - n)

= n(n-1)(n+1)

since it is divisible by 3 and 2 ,because it is a multiple 3 consecutive number

if, n-1 is odd then n+1 is also odd, then it is a multiple of 9

but if, n-1 is even then n+1 is also even, then it is a multiple of 4

so, largest multiple = max(9*2, 4*3) = max(18, 12) = 18

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation: