C
1.1, 1.2, 1.3, 1.4,
d 1,4, 9, 16, 25 no
(2, if n=1
lan--7, if n> 1
2. what are the first four terms of the
sequence defined by
r=32 ifnal
ana-7 ifnal
€9.1=2 (n-1)-7
3. find az4 for the arithmetic sequence
az4=11 +34-1)
11,16,21, "
alnita thorolated corios for each finite sequence then evaluate the series

£56

step-by-step explanation:

u divide 24 by 3 and u get 8 so if u do 8 time 7 or 8+8+8+8+8+8+8 u get 56 and 56 divided by 7 is 8.

the monthly balance will be $75,000

a 4/6 = 9/12   not proportional

step-by-step explanation:

to find which are not proportional, we can use cross products

if it is true, they are proportional.   if it is not true, they are not proportional.

a 4/6 = 9/12

4* 12 = 6*9

48 = 54

not this is not proportional  

b 2/3 = 12/18  

2* 18 = 3 * 12

36 = 36

this is proportional

c 5/4 = 10/8  

5*8 = 4*10

40 = 40

this is proportional

d 7/5 = 35/25

7*25 = 5 * 35

175 = 175

is proportional