Write a recursive formula and an explicit formula for the following arithmetic sequence. 18, 27, 36, 45, 54, ...
A recursive formula is a1 =
(Simplify your answers.)

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Evaluate the expression for the given value of the variable. | ? 4 b ? 8 | + ? ? ? 1 ? b 2 ? ? + 2 b 3 -4b-8+-1-b2+2b3 ; b = ? 2 b=-2

Find the value of x in the diagram below. select the best answer from the choices provided