On a coordinate plane, a curved line crosses the x-axis at (negative 1, 0) and crosses the y-axis at (0, 0.25). the line exits the plane at (negative 2, negative 6) and (2, 6). which statement is true about the end behavior of the graphed function? as the x-values go to positive infinity, the function's values go to negative infinity. as the x-values go to zero, the function's values go to positive infinity. as the x-values go to negative infinity, the function's values are equal to zero as the x-values go to positive infinity, the function's values go to positive infinity.

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.