Answer:
d
Step-by-step explanation:
The original number would be 48. 12 multiplied by 4 is 48, and if you add a three to that you will get 51.
Hope this helped :)
Answer:
90
Step-by-step explanation:
To find s4 we find sum of values when n=1,n=2,n=3,n=4
given expression is 
n=1 , plug in 1 for n

n=2

n=3

n=4

Sum of all 4 terms = 6+12+24+48=90
Answer:
$270
Step-by-step explanation:
Price after markup was 1.20($250) = $300
Price after discounting: (1.00 - 0.10)($300) = $270
Six less than "b"
i think this would be the answer
good luck!!