Answer:
1) 11.9
2) 3.6
3) 18.9
4) 45.4
Step-by-step explanation:
Math
The answer is D I believe
1. Given (12+3)x, we can sum the numbers in the parenthesis to get 15x
2. Given 12x+3x, we can factor x to get (12+3)x and get the same as 1.
3. Given (12+3x)x, we have to distribute the x and we have 
4. This expression is already simplified.
6274 Rand = $878.36 US dollars
The exchange was 1 Rand for $0.14 US dollars so all you have to do is multiply 6274 by 0.14.