3t + 15 = 45. solve pls

Iwill give brainliest only if your correct the words subsequent and submerge both contain the prefix sub. based on this information, what does the prefix sub most likely mean? a) under or secondary b) true or verifiable c) tricky or difficult d) around or centered on

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?