The sales volume for an online bookstore was 432 books in the first week. then due to the new policy of tax for on-line shopping, the sales volume dropped to 297 books at the second week. by what percent did the sales volume go down?

The depth of a lake at a certain point, wich is a function of the distance of that point from shore, is 30 feet.

Type the correct answer in each box. spell all words correctly. a sequence of transformations maps ∆abc onto ∆a″b″c″. the type of transformation that maps ∆abc onto ∆a′b′c′ is a . when ∆a′b′c′ is reflected across the line x = -2 to form ∆a″b″c″, vertex of ∆a″b″c″ will have the same coordinates as b′.

Twelve less than a number is at most 20