Please HELP im preparing for my math exam tomorrow and i need help solving these types of questions I will give you brainliest and 5 stars and heart please help I was always bad at these types of questions

The length of a ribbon roll is 2.5 m. If 50 cm has been used from it, how much is left?

Match the functions with correct transformation. question 1 options: stretch by a factor of 4 shift to the left 3 shift up 3 compression by a factor of 4 shift to the right 1 shift to the left 1 compression by a factor of 1/2 reflection stretch by a factor of 1/2 shift to the right 3 shift down 3 functions 1. f(x) = 3^x 2. f(x) = |x-1| +3 3. f(x) = √(x+3) 4. f(x) = (x+1)²-3 5. f(x) = 1/2x^2 6. f(x) = 4|x| put the number of the function by the transformation