What percent of 55 is 34?

Yuri, sam and dani had the same math homework last night, but none of them finished it. yuri finished 3/8 of her homework, sam finished 4/6 of her homework and dani finished 1/2. who finished the most math homework? who finished the least amount?

Y=4x^2+x-1 solve using quadratic formula

What is the rate of change of a line that passes through (2,-5) and (6,-2)?