Evan pays $12 per month to belong to a gym so that he can swim in the gym's pool. each time he swims he pays an additional $2. he uses the function e = 2t + 12 to track his monthly swimming expenses, where e represents total expenses and t represents number of times evan swims. make an input-output table, graph your results, and determine if the function has a proportional relationship. explain.

Can you simplify 4/7? 24 points will be awarded!

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

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