Explanation: first we would start off with finding out how much 1 pound of pretzel would cost. You would find that by dividing 12.75 by 5 to get 2.55. 2.55 is the cost of one pound of pretzels. Than you multiply 2.55 by 7 to get 17.85 the answer.
You first divide 12.75 by 5, to see the price for one pound of pretzels. Then, you times that by 7, because you want to know how much it would cost for Lupita to but 7 pounds of pretzels. That would equal 47.85, which is your answer.
The formula of compound continuously is A=p e^rt A future value? P present value 300 R interest rate 0.07 T 4 years E constant A=300×e^(0.07×4) A=396.94 round your answer to get A=397
