Need asap an investment banker received a bonus and invested that money in two investments. he put a certain sum of money in the first investment that returned 7% interest after one year. in the second investment he invested four times that of the first investment and got a 14% interest return after one year. if the total interest from his investments after one year was $7,245.00, find the amount invested at each interest rate.

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Alex measured the length of an item to be 3.7 cm. the actual length is 3.5 cm. what is alex’s percent error?

What is the domain of the step function f(x)=[2x]-1?