A vending machine dispenses gumballs in a regular repeating cycle of ten different colors. If a quarter buys 3 gumballs, what is the minimum amount of money that must be spent before three gumballs of the same color are dispense?

A. \$2.25 C. \$2.0
B. \$1.75 D. \$1.0

Given a right triangle where the hypotenuse is r, the acute angle θ, the opposite vertical side y and adjacent side x. Which of the following relations does not apply?

A. $1 + \tan^2 \theta = \sec^2 \theta$ C. $x^2 + y^2 = r^2$
B. $\cos 2\theta = 1 + 2\sin^2 \theta$ D. $\sin 2\theta = 2 (\sin \theta) (\cos \theta)$