SOLUTION: Kathryn and Gaby are enrolled in a university program to study abroad in Spain
and then in South Africa. Th ey realize that they will have to convert US Dollars
(USD) to Euros
Question 789194: Kathryn and Gaby are enrolled in a university program to study abroad in Spain
and then in South Africa. Th ey realize that they will have to convert US Dollars
(USD) to Euros (EUR) in Spain, and then convert EUR into South African Rand
(ZAR) for their time in South Africa. Th ey identifi ed a currency exchange service
in Spain that will convert D dollars to euros with the function E(D) = 0.64D- 5
and a currency exchange service in South Africa that will convert E euros to rand
using R(E) = 12.1E- 10.
1. For each function, give the units for the domain and range.
2. If Kathryn converts 450 USD in Spain to EUR, then converts that amount
in EUR to ZAR, how much will she have in South African rand? Explain the
process you used to arrive at your answer.
3. Explain how to compose the functions E and R to answer Item 2. Write the
composite function and identify the domain and range.
4. Aft er converting USD to EUR in Spain, Gaby had 139 EUR. Use an inverse
function to fi nd how much USD she converted.
1) E(D)=0.64D-5 Domain= Dollars
Range= E(D) convertion in euros
R(E)=12.1E-10 Domain= Euro
Range= Convertion in south Africa.
Please if you could help me with the rest it would be great. i really try to do i don't still understand. Please
