Which of the expressions is equivalent to the expression (117.50-83.50)+6(22.50+3) A. 34+138
B. 40(25.50)
C. 28(25.50)
D. 34+6(25.50)

The function ƒ is defined by ƒ(x) = (x + 3)(x + 1). the graph of ƒ in the xy-plane is a parabola. which interval contains the x-coordinate of the vertex of the graph of ƒ?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

If rt is greater than ba, which statement must be true ?