Ratio and proportion
calculate the missing numbers in the following
a) 3: 10=? : 40
b)5: 7=? : 21
c)6: 11=24: ?
d)4: 50=2: ?

What is the solution to the equation 9^(x+1) =27

Dawn is selling her mp3 player for 3 4 of the original price. the original price for the mp3 player was $40. how much is she selling her mp3 player for?

Bo is buying a board game that usually costs bb dollars. the game is on sale, and the price has been reduced by 18\%18%. which of the following expressions could represent how much bo pays for the game? choose 2 answers: choose 2 answers: (choice a) a 0.82b0.82b (choice b) b 1.18b1.18b (choice c) c b-0.18b−0.18 (choice d) d b-18b−18 (choice e) e b-0.18bb−0.18b