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a bicycle has a regular price of $175.
it is on sale for 20% off.

which of the following is the closest to the total cost, including 13% tax?

a) $140
b) $158
c) $163
d) $168

Iwill give you ! what is the measure of ∠v ?

Which of these tools or constructions is used to inscribe a hexagon inside a circle?

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.