Jaylon makes twice as much an hour as sam. sam makes x dollars an hour. write an expression describing how much jaylon makes an hour.
a) 2x
b) x2
c) 2 + x
d) x - 2

Find the equation of the ellipse with the following properties. the ellipse with foci at (0, 6) and (0, -6); y-intercepts (0, 8) and (0, -8).edit: the answer is x^2 over 28 + y^2 over 64 = 1

F. a fair coin is thrown in the air four times. if the coin lands with the head up on the first three tosses, what is the probability that the coin will land with the head up on the fourth toss? a. 0 b. 1/16 c. 1/8 d. 1/2

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4