I need help on the stared ones( I WILL MAKE YOU BRAINIEST)!

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

How long must $542 be invested at a rate of 7% to earn $303.52 in interest? in a easier way

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number t of tokens james has is a function of g, the number of games he plays. write the function’s formula? t=