How to find the surface area of a 3d shape?

1-for what value of x is line a parallel to line b 2-for what value of x is line a parallel to line b

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?

If the table of the function contains exactly two potential turning points, one with an input value of –1, which statement best describes all possible values of m? m ≥ –12 –12 < m < 4 m ≤ 4 m ≥ 4 or m ≤ –12