Let denote the -th term of the sequence, starting with the index . Denote by the forward differences of , that is
for . We have
which indicates is an arithmetic sequence with common difference between terms of 3 and starting with 4, so that
for . So we have
and so on, with the th term given by
Reversing the order of all but the first term in the sum gives
so that
for .
Then he is travelling 24 miles per hour
Answer:
m= -2/3
Step-by-step explanation:
J = 106% . x
S = 106% . (550+x)
O = 106% . 2x
S = 2(212+O) = 106%(550+x)
S = 424 + 2O = 583 + 106%x
2(106%.2x) - 106%x = 583-424
159 = 106%x( 4 - 1 )
159 = 106%x ( 3 )
159 = 318%x
1 = 318%x : 159
1 = 2%x
1 = 2/100 . x
x = 50
Jivesh put $50
Stacy put $600
Oliver put $100