Inch figure, m<a=75°.find m<b​

What is the average rate of change for this function for the interval from x=2 to x=4 ?

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?

Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations