Simplify 2x + 7 / 2x^4 + 21x^3 + 35x^2 - 37x + 46

Your friend swims on the school team. in his first four races, his times are 24.7, 23.5, 25.6, and 27.2 seconds. which time listed for his next race would make the range larger?

Find the domain and range of the following function f(x) = 51x - 21+ 4

If a distance of 75 yds is measured back from the edge of the canyon and two angles are measured , find the distance across the canyon angle acb = 50° angle abc=100° a=75 yds what does c equal?