Please answer these two questionsss i suck at thiss Brainliest If the length of a square is 9 cm and the length of its image is 3 cm. Describe the dilation.
Congruence
Similarity
Enlargement
Reduction

If the length of the width of a rectangle is 12 cm and the length of the image of its width is 24. Describe the dilation.
Congruence
Enlargement
Reduction
Similarity

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.