Which of the following sequences is arithmetic? 1. 1, 2, 3, 5, 8
2. 5, 15, 45, 135
3. 11, 13, 15, 17

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.

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?

Find the solution on the interval [0, 2pi)