2. Every day you collect 4 pennies and keep them in a jar. So the first day you have 4 pennies, the second day you have 8 pennies, the third day you have 12 pennies, etc. How many do you have on the 15th day? (1 point)
75
19
15
60

Question

2.   Every day you collect 4 pennies and keep them in a jar. So the first day you have 4 pennies, the second day you have 8 pennies, the third day you have 12 pennies, etc. How many do you have on the 15th day?  (1 point)
75
19
15
60

jim_thompson5910 · Answer

plug in n = 15 into

a(n) = 4 + 4(n-1)

to get your answer

anonymous · Answer

4+ 4(14) =15(4)= 60

anonymous · Answer

4.   To which set of numbers does the number belong?
  (1 point)    square root 51
rational numbers
irrational numbers
integers
natural numbers

anonymous · Answer

can someone help me

jim_thompson5910 · Answer

is 51 a perfect square?

anonymous · Answer

yes

jim_thompson5910 · Answer

it is? so there's some integer that you can square to get 51?

jim_thompson5910 · Answer

ex: 100 is a perfect square since 10^2 = 100

jim_thompson5910 · Answer

4 is a perfect square because 2^2 = 2*2 = 4