35 POINTS TO ANYONE WHO CAN SOLVE THIS. Thank you.

Simplify the expression. -2/5(10+15m-20n)

The length of the line segment ac is 8x-9 what is the value of x

Mahnoor randomly selects times to walk into a local restaurant and observe the type of music being played she found that the restaurant was playing country 11 times rock & roll 17 times and blues 8 times use the observed frequencies to create a probability model for the type of music the restaurant is playing the next time mahnoor walks in.