For this graph, mark the statements that are true.
a. the domain is the set of all real
numbers.

b. the range is the set of all real
numbers greater than or equal to
zero.

c. the domain is the set of all real
numbers greater than or equal to

d. the range is the set of all real numbers.

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.

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points

Ingredient c: 1/4 cup for 2/3 serving or ingredient d: 1/3 cup for 3/4 serving which unit rate is smaller