Barb signed up for an art club, she had to pay $50 to sign up for the club and $8 each week that she attended it. If she spent a total of $90, how many weeks did she go to the blue? Write and solve an equation?

—the graph shows how fast a strand of human hair grows. how many inches would the hair have grown in 5 months

Write two subtraction equations that are equivalent to 5 + 12 = 17.

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