Help plz i must put in the squares just ÷or× to get the result 3⁹⁹,*i jusr can put ×or÷ in the squares
help me plzzz i will thank you so much,​​

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

Amanager recorded the number of bicycles sold by his company each quarter. his projected sales after t years is given by the expression below. which of the following statements best describes the expression? a. the initial sales of 575 bicycles increases at the rate of 4% over 4 quarters. b. the initial sales of 575 bicycles increases at the rate of 18% over 4 years. c. the initial sales of 575 bicycles increases at the rate of 4% over t quarters. d. the initial sales of 575 bicycles increases at the rate of 18% over t years.

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