The Answer to your problem is:
0.666667
I believe the answer is A
Answer:
Emma = 17
Clare = 12
Mark = 34
Step-by-step explanation:
Emma = x
Clare = x-5
Mark = 2x
2x+x+x-5=63
4x=5=63
4x=63+5
4x=68
x=17
Emma = x = 17
Clare = x-5 = 17-5 = 12
Mark = 2x = 2(17) = 34
If the value in the parentheses is > 1 then its exponential growth otherwise its exponential delay.
for example the first one is growth ( because of the 1.25)
second one is decay ( because of the 1/2)
