1. Due to gravity, an object falls 16t2 feet in t seconds. You drop a penny from the top of the Empire State Building. How far will the penny have fallen after 3 seconds?​

X2 + y 2 = 36 x + y = 6 solve the system of equations.

What is the volume of a cone with a height of 6 cm in the radius of 2 cm

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.