Answer:
x/3-6
Step-by-step explanation:
The number represents x and since it's a quotient you divide by 3 and since it says 6 less that you subtract by 6
a.
b.
b.18
18/4=4.5
U1 = a = 16
r = 32/16 = 2
Un = 256
Un = a.r^n-1
256 = 16.2^n-1
2^n-1 = 256/16
2^n-1 = 16
2^n-1 = 2^4
n-1 = 4
n = 5
Sn = a(r^n - 1) / r-1
S5 = 16(2^5 - 1) / 2-1
S5 = 16(31)
S5 = 496
