I don't know about the first one but for the second one:

Answer:
x intercept = 15 # of cars to detail if no SUVs
y intercept = 10 # of SUVs to detail if no cars
Hope this helps!
Make the whole number as an improper fraction. example, 2 7/12 would be 31/12 and then you can multiply 8/1 x 31/12
it depends what the question is
It’s 2/25 because 24 x 1/3/100 and you simplify the complex fraction so it’s 24 x 1/300 now reduce the numbers with the greatest common factor 12 so now it’s 2x1/25 then calculate the product 2/25