There are 16 on each layer and 96 in total
Answer:
After 4 months, the charges will be same.
Step-by-step explanation:
Membership charges of club one = $40
Per month charges = $40
Let,
x be the number of months
y be the total amount
y = 40x + 40
Membership charges of club two = $100
Per month charges = $25
y = 25x + 100
For equal charges, both equations will be same
40x + 40 = 25x + 100
40x - 25x = 100 - 40
15x = 60

Therefore,
After 4 months, the charges will be same.
Answer:
D. 8
Step-by-step explanation:
C= 2πr
π= 3.14
C= 25.12
25.12 = 2 * 3.14 * r
r= 4
d= 2r
d= 8
"a is 4 more than b" ⇒ a = b +4
"a is 1 lesss than b" ⇒ a = b - 1
The first pair of equations is the appropriate choice.
The answer is B because it is the middle of 16 and 24