Suppose that the functions s and t are defined for all real numbers x as follows.
s(x) = 2x+4
t(x) = 5x
write the expressions for (s+t)(x) and (s-t)(x) and evaluate (s×t)(x)

Δabc is reflected across line l to form δ alblcl, and a¯¯¯al¯¯¯¯ intersects line l at point d. which equation is not necessarily true?

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

Peter measures the angles in a triangle. he finds that the angles are 95, 10 and 75. is he correct? explain your answer