What is the missing length?

Tcan be concluded that % of the seniors would prefer to see more candid pictures in this year's edition of the yearbook.

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.