The exchange rate between non-fixed currencies continuously fluctuates. the following chart shows the exchange rate of the pound sterling to the japanese yen over a period of six days.
day
£: ¥
monday
1: 141.014
tuesday
1: 138.650
wednesday
1: 149.890
thursday
1: 144.209
friday
1: 148.176
saturday
1: 143.008
tina has £72.90 to turn into yen. how much greater is the amount of yen she would receive if she made her trade on the most favorable day than if she made her trade on the least favorable day? round to the nearest whole yen.
a.
¥172
b.
¥317
c.
¥819
d.
¥1,104

c.  ¥819

Step-by-step explanation:

The highest conversion rate is on Wednesday, at 1:149.890.  Converting on this day will result in

72.9(149.890) = 10926.891

The lowest conversion rate is on Tuesday, at 1:138.650.  Converting on this day will result in

72.9(138.650) = 10107.585

The difference between the two is

10926.891-10107.585 = 819.396 ≈ 819

mark other person brainliest

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.