Answer:
4
Step-by-step explanation:
Ex: 7^3=(7×7×7) --- 7×7=49×7=343
Answer:
Step-by-step explanation:
remove the parenthesis
5x+10=20
5x+10-10=20-10
5x=10
x=2
Answer:
(D) 
Step-by-step explanation:

Answer:
35 < u
Step-by-step explanation:
25 < u - 10
25 + 10 < u - 10 + 10
35 < u