Tricia plotted the point (4, 2) on a coordinate plane.

She then performed a series of
transformations on the point so that the point mapped onto its original location of (4, 2).

Sort the transformations below so that (4, 2) maps onto itself by the end of the last transformation.

Write the correct transformation for each step:

° Dilation of 1/2 with the center of
dilation at the origin

° Translation 2 units right and 3 units up

° Reflection over the y-axis

° Rotation 180°

If jm equals 5x -8 and lm equals 2x -6 which expression represents jl

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.

87.5% , 100% , 83.33 , 93.33% , 100% , 82.5% are all the academic points i've gotten this quarter. what's my final grade?