Which function would you use to solve for the length b?

Let's assume

reference angle =B

so,

opposite =b

adjacent=a

now, we can use tan

now, we can solve for b

Multiply both sides by a

so, option-A...............Answer

to determine the unit cost your would divide the total cost by the number sold.

7 bagels for $4.41       $4.41/7 = $.63 each at fresh side

5 bagels for $3.60         $3.60/5 = $.72 each at value mart