Robert wrote a check to pay for his groceries. He thought he had $250 in his checking account but he actually had $200. Determine the percent of error

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!