Answer:
There isn't anything i can do when there isn't even a graph or a picture showing what it even looks like so I can't help you maybe re-post it with a picture then i can help.
3x - 15
less than or more than trick-------> the number before those words should be the second number in the equation
37.5% of her credits. 24 out of 64, divide and you get your answer. multiply by 100 to get the percentage.