Rewrite the following equation as a function of x. 25x⁴-625y-500=0

answers:
a. f(x) = 1/25x⁴-4/5
b. f(x) = -25x⁴+5/4
c. f(x) = 1/25x⁴+4/5
d. f(x) = 25x⁴-5/4

What is the best estimate of the length of a football

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

Ellie spent $88.79 at the computer stote. she had $44.50 left to buy a cool hat. how much money did she originally have? write and solve an equation to answer the question.