Find the area of the yellow region. Round to the nearest tenth. PLEASE HELP ASAP

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

Ihave trouble finding the nth term of a linear sequence

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?