Use the place value chart to write 60{,}000+3{,}000+20+960,000+3,000+2 0+960, comma, 000, plus, 3, comma, 000, plus, 20, plus, 9 in standard form. Enter a 111 digit number in each box of the place value chart. Ten thousands Thousands Hundreds Tens Ones What is 60{,}000+3{,}000+20+960,000+3,000+2 0+960, comma, 000, plus, 3, comma, 000, plus, 20, plus, 9 in standard form? Stuck?Watch a video or use a hint.

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.