Find a linear differential operator that annihilates the given function. (Use D for the differential operator.) 6 ex cos 5x

Rewrite the following without an exponent. (5/8)-1

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.