What is the next term of the arithmetic sequence? 7,11,15,19,7,11,15,19

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items