Answer:

Step-by-step explanation:
Simplify:
45 = 5 * 3 * 3
60 = 5 * 3 * 2 * 2
GCF = 5*3 = 15


Step-by-step explanation:
3x+3² , you might want a second opinion I am no good at math but I tried to work it out to see if I would get it right so don't quote me on this and put it down for an answer get a second opinion please
Answer:
24
Step-by-step explanation:
2(10+2)
turns into 2×12
so, that would be 24
If he charges $145 he worked for 5 hours at $20 an hour