Maria wanted to invest $8000 at the bank. She invested part of her money in a CD account paying 3% simple interest and invested the rest of her money in a checking account paying 1.6% simple interest. After 1 year her income was $195.20. How much did Maria invest in the checking account?

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.