Having trouble solving please help

The two-way table shows the number of people whose hobbies are reading or solving puzzles and who either ride a motorcycle or don’t ride a motorcycle. among people whose hobby is reading, what is the relative frequency of not riding a motorcycle? express your answer as a decimal, and round it to the nearest hundredth if necessary. enter your answer in the box. reading solving puzzles ride a motorcycle 7 3 don't ride a motorcycle 5 9

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?