The first three terms of an arithmetic sequence are x-1, 3x-2 and 5x-3. Which of the following expressions represents the 15th term in the arithmetic sequence

Ineed me i stuck and i don’t want to get it wrong

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Aball is dropped from a height of 10m above the ground. it bounce to 90% of its previous height on each bounce. what is the approximate height that the ball bounce to the fourth bounce?