Can somebody show me the work to the area of a circle and the diameter is 42

A bicycle costs $198.99. If the sales tax is 8%, what will be the final cost of the bicycle including tax (in dollars) ?

What is an inequality term

Express your answer in simplest form

What is - 7nx+2nx+2n+7x equal to

Which number is the greatest - 3.7, - 15/4, - 3.888, or - 3 4/5

Alexa mom has 3 kids. Their names are Ally and Alex, what is the 3rd ones name.?

What is the answer for 2x - (x+10) = 45

The volume of one of the Great Lakes is 3.5 * 10^3 cubic kilometers. If there are 6.3 * 10^7 fish in the lake, what is the average number of fish per cubic kilometer?

An old billionaire is writing his will, and deciding how to distribute his nine estates among his three children. He wants to give each child at least one estate, and he does not want to give any two of his children the same number of estates.

You drive an average of 300 miles per week in a vehicle that gets only 14 miles per gallon overall. with the cost of gasoline at $3.