SOLUTION: Let P(r) represent the total number of pins in r rows. Please help Tutor! a. complete the table based on the total number of pies. d. Write a function for P(r). The function

Algebra ->  Functions -> SOLUTION: Let P(r) represent the total number of pins in r rows. Please help Tutor! a. complete the table based on the total number of pies. d. Write a function for P(r). The function       Log On


   



Question 880938: Let P(r) represent the total number of pins in r rows. Please help Tutor!
a. complete the table based on the total number of pies.
d. Write a function for P(r). The function can either be explict or recursive.
E. Jack decides that he will have 12 rows of pins. What is the total number of pins that he will need!
Number of rows (r) Total number of pins P(r)2,5,10,17,26,37

1
2
3
4
5
6

Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
This is a confusing question.
If the above table is what you tried to write,
it seems that there are 2 pin in row number 1,
3 pins in row number 2,
5 pins in row number 3,
7 pins in row number 4,
and so on.
So, after row 2, each row has 2 more pins than the one before.
I would have expected row 1 to have just 1 pin.
a. If the above table is what you tried to write, what is there to complete?
Where are b. and c. ?
d. P%28r%29=r%5E2%2B1
e. P%2812%29=12%5E2%2B1=144%2B1=145