1.
two times a number, x, plus 3 times a number, y, equals 50. four times x minus 2 times y equals 4. what are the numbers?
x = 7, y = 12
x = 19, y = 4
x = 10, y = 18
x = -11, y = 24
2.
one times a number x, plus 2 times a number y, equals 9. negative one times x minus 3 times y equals -14. what are the numbers?
x = 7, y = 12
x = -1, y = 5
x = 5, y = 1
x = -11, y = 24

What expression is equivalent to 1/2(2+3x-6)

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.