Ruby has $455.00 in a savings account that has an annual interest rate of 4.5%. If Ruby does not deposit or withdraw any money from the account, what will be
the balance in the account after 6 years? Use the formula P(1 + ) – B, where
p is the starting amount of money, r is the interest rate, and is the time in
years. Round your answer to the nearest cent.
$4,228.82
- $458.78
$592.53
0 $2,852.85

Step-by-step explanation:

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

step-by-step explanation: