Solve each equation with the quadratic formula. 4n^2+7n-1=-4

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

What is the value of x in the following equation? -3x-2=2x+8

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?