This table gives the value of an employee's salary for the first 5 years after they were hired. The data can be modeled using an exponential function. Years 1 2 3 4 5
Salary $31,800 $35,000 $38,500 $43,500 $46,000

Based on the data, which amount is closest to the value of the employee's salary 10 years after the employee was hired?

$50,000

$55,000

$65,000

$75,000

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.