Janet is three years older than her sister julie. janet’s brother is eight years younger than their sister julie. the sum of all of their ages is 55 years.

Julie is 20

Janet is 23

Their brother is 12

Step-by-step explanation:

20+23+12=43+12=55

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.