Answer:
i think the first one not 100% though
5x + 45
Step-by-step explanation:
distribute 5 to both x and 9 so multiply them both
m<9=130 it also equal to 180 so 130-180 makes m<4= 50
12f-5f²+6f+10f²= 10f²-5f²+12f+6f=5f²+18f
