Josh is a college student with no children. He is a US citizen. He must file his first tax return for earned income of $15,000. He isn’t itemizing deductions. Josh will use a form from the 1040 series to . Given Josh’s filing status and tax information, the most appropriate 1040 series form would be Form .

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.