Aria is a songwriter who collects royalties on her songs whenever they are played in a
commercial or a movie. Aria will earn $20 every time one of her songs is played in a
commercial and she will earn $80 every time one of her songs is played in a movie.
Aria earned a total of $400 in royalties on 11 commercials and movies. Determine the
number of commercials and the number of movies on which Aria's songs were
played.

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

Use the given information to determine the exact trigonometric value.

Convert the number to decimal form. 12) 312five a) 82 b) 30 c) 410 d) 1560 13) 156eight a) 880 b) 96 c) 164 d) 110 14) 6715eight a) 53,720 b) 3533 c) 117 d) 152