The call signs of radio and television stations in the United States generally begin with the letter W east of the Mississippi River and the letter K west of the Mississippi. Repetition of letters is allowed. How many different call signs are possible if each station uses a W or K followed by 3 letters?

# M and N represent digits in the two decimals listed above…

O.M 0.N5

24. M and N represent digits in the two decimals

listed above. One of the decimals is equivalent

to 1/4 and the other is equivalent to 1/2. What

is the sum of M and N?

(A) 2

(B) 3

(C) 5

(D) 6

(E) 7

# Renting video games from The Video Vendor costs $6 per game with no annual membership fee…

Renting video games from The Video Vendor costs

$6 per game with no annual membership fee. Renting

video games from The Game Garage costs $3 per

game, but a customer must pay an additional $60 for

an annual membership. If n represents the number of

video games a customer rents in a year, which of the

following gives all values of n for which it costs less

to rent from The Game Garage than from The Video

Vendor?

# at 7am a sewage treatment tank contains 3000000 gallons of water…

at 7am a sewage treatment tank contains 3000000 gallons of water. starting at 7am, x gallons per minute flow into the tank, and y gallons per minute flow out of the tank. no water enters or leaves the tank otherwise. which of the following functions f models the number of gallons of water in the sewage treatment plant at 8am?

# In the equation below, the angle measures are in radians and a is a constant…

In the equation below, the angle measures are in radians and is a constant.

𝑠𝑖𝑛(𝜋/8)=𝑐𝑜𝑠(𝜋/𝑎)

Which of the following could be the value of ?