Which of these could be the graph of F(x)=3*(0.5)^x ?

Iwill give you ! what is the measure of ∠v ?

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.