Answer:
A) In 2014, it will be 24.64 currency units while in 2021, it will be 27.56 currency units.
B) 2051.
Step-by-step explanation:
The currency units are determined using the equation below
Currency Unit = 0.4164(x) + 14.6512. (x being the difference between the year you want to determine the currency unit and 1990)
A) For year 2014,
x= 201 4-1990= 24
0.4164(24) + 14.6512 = 24.6448
Rounding to 2 decimals is 24.64 currency units.
For year 2021,
x = 2021-1990 = 31
0.4164(31) + 14.6512 = 27.5596
Rounding to 2 decimals is 27.56 decimals
B) Using the function
Currency Unit = 0.4164(x) + 14.6512. to predict the number of years it will take the 40 Currency units to equal 1 currency unit in 1990,
substitute 40 into currency unit:
40 = 0.4164(x) + 14.6512
40-14.6512= 0.4164(x)
25.3488=0.4164(x)
Dividing both sides by the coefficient of x
x = 25.3488/0.4164 = 61
To get the exact year, add the value of x to 1990
1990+61= 2051
By 2051, the Currency unit of 40 will equal 1 currency note of 1919.