Find the slope of the graph. Write it as a fraction or whole number (not a mixed number).What the answer ?

Factor the expression using gcf 9b+45

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

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.