1- There are 3 different trains running to London. One train leaves every 15 2 poin minutes, another leaves every 20 minutes and the last one leaves every 45
minutes. They first leave at 6:15 am. What time do they all leave again at
the same time?

do i do it on a graph?

step-by-step explanation:

they are simplified

step-by-step explanation:

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.

b. hannah is playing with her cousin at