Bobby and $9 per hour and $6 for each delivery he makes. He wants to earn more than $155 an 8 hour work day. What is the least number of deliveries that Bobby must make to reach his goal?

Alake near the arctic circle is covered by a 222-meter-thick sheet of ice during the cold winter months. when spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. after 333 weeks, the sheet is only 1.251.251, point, 25 meters thick. let s(t)s(t)s, left parenthesis, t, right parenthesis denote the ice sheet's thickness sss (measured in meters) as a function of time ttt (measured in weeks).

What are “like terms”? why can we only add like terms?

How do i do this activity, is appreciated