If angle e measures (7x -12)º, what is the measure of its complement?
a. (7x-192)
b. (102-7x)
c. (192-7x)
d. (7x-102)
i don't know how to solve this! can someone explain it?

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14