What is the answer to thisRound 287,301 to the nearest hundred thousand.

Which table represents a linear function? i'll give brainliest to first answer ^'^

If chord ab is congruent to chord cd, then what must be true about ef and eg?

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.