The price of a house is originally listed at $195,000. the owners are having a hard time selling it and decide to reduce the price to $146,250. what is the percentage decrease of the price of the house?

What is the total surface area of this square pyramid?

Find the area of an equilateral triangle with a side of 6 inches

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.