Xavier rode 5.4 kilometers in 20 mins. On Thursday. On Friday, he rode 7.8 kilometers in 30 mins. On which day was his speed faster? How much faster in km/hr?

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

Solve the system of equations. y= 2x y= x^2 - 15

Which of the following equations is of the parabola whose vertex is at (2, 3), axis of symmetry parallel to the y-axis and p = 4? a.)y-3 = 1/16 (x-2)^2 b.)y+3 = -1/16 (x+2)^2 c.)x-2 = 1/16 (y-3)^2