Precalculus question worth 20 points

i don't get this question, if anyone could that'd be great!

santa's wonderland is an extravagant holiday light display that is open from early november through january each year. the entry fee is $15 per vehicle for up to and including 5 people, with an additional $1.50 for each person over 5. express this information as a piecewise function of x, where x represents the number of people in the vehicle.

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5

One positive integer is 2 less than another. the product of the two integers is 24. what are the integers