Kevan earns a net salary of $55,670 per year and pays a tax rate of 21%. How much income tax does Kevan pay? What is Kevan's salary? What is the tax percentage? What is the tax rate as a decimal? What is the salary TIMES the decimal? What is the income tax amount?

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.

The nth term of a sequence in 2n-1 the nth term of a different sequence is 3n+1 work out 3 numbers that are in bothe sequences and are between 20 and 40

P= price tax is 4% added to the price. which expression shows the total price including tax?