3. (7.4D) If the original quantity is 20 and the new
quantity is 25, what is the percent change

If 25% of y is 30, what is 60% of y?

In the geometric progression –3, 12, −48… what term is 3,072?

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance