When 508,000,000 is written in scientific notation, what will be the value of the decimal number?

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation

What is the area of this figure. select from the drop down box menu to correctly complete the statement shows a rectangle 3in. by 16in. and a trapezoid center is 10 in. by 5 in. answers are 128 136 153 258

Answer this all of it i don’t know how to do it i wasn’t there because i was sick and it’s a nti today so i home not knowing what to do