100 POINTS! 1: What is the domain of the given function?

A.-2 ≤x ≤6
B. -2 ≤y ≤6
C.-3 ≤x ≤7
D. -3 ≤y ≤7

2: What is the range of the given function?

A.-7≤y<9
B. -7 C. -7≤y<5
D. -7
3: What is the domain of the function?

A. x ≥ -2
B.-3 ≤ x ≤ 3
C. y ≥ -2
D. all real numbers

4: What is the range of the function?

A. x ≥ -2
B.-3 ≤ x ≤ 3
C. y ≥ -2
D. all real numbers

5: Both the domain and range of the graph shown above is all real numbers.

A. True B. False

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.