Find laplace transform of t+t^2 +t^3

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

The table below lists recommended amounts of food to order for 10 party guests. how much of each food item should nathan and amanda order for a graduation party with 55 guests? use the table to answer. item amount fried chicken 16 pieces lasagna 7 pounds deli meats 1.8 pounds sliced cheese 1 and two fifths pounds bakery buns 1 dozen potato salad 2 pounds