11) (-x - 3) + (3x + 8)
i don’t understand these

6.3x+14 and 1.5x-6 answer in simplified form

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?

Find the zeros of each function. f(x) = x^2 + 5x - 6