A. A hockey coach bought 20 pucks for a total cost of $47.50. The pucks used for practice cost $2.00 each, and the pucks used for games cost $2.75 each. Write a linear system to model this situation:

b. How many of each type of puck did the coach purchase?
Practice pucks: Game pucks:

What is the reflection image of (5,-3) across the line y = -x?

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

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?