May be uneven because questions con be worth more or less including zeroj depending on your answer Find the volume, in cubic inches, of the composite solid below, which consists of a 4-inch square solid rectangular bar that is 16 inches
in length. The bar has a 2-inch diameter cylinder hole cut out of the center of the bar from the top of the bar through the entire length of
the bar. Use x = 3.14 to find the volume. Enter only the number.
18
The solution is

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.