Answer:
i think its D but im not entirely sure, im sincerly sry if im wrong
Step-by-step explanation:
Answer:

Step-by-step explanation:
add 4 on both sides
leaves you with 15 on the right side
you then divide by negative 2
since you divide by a negative you have to switch the sign
Answer:
120
Step-by-step explanation:
2 1/10 because the 1 in 2.1 is in the tenth place