After a 5% discount, a telephone bill is $79.50. how much was the bill originally?

Acertain standardized? test's math scores have a? bell-shaped distribution with a mean of 520 and a standard deviation of 105. complete parts? (a) through? (c)

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?