Twice Carrie’s age increased by three is equal to twenty-five. Which equation can be used to find Carrie’s age, x

In an experiment you are to flip a two sided coin 100 times and record 55 heads up and 45 tails up determine the theoretical and experimental probability of getting a heads up in the experiment.

Daniel bought a computer game for $25 and later sold it to thomas for a 40% profit. how much did daniel sell the computer game for?

Idon’t understand! use slope intercept form to solve: through: (2,5) slope= undefined