One more question i just really need help lol

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

Need to increase the numbers of customers i talk to daily by 20% how many customers do i need to talk to if i talk to a average of 8 customers per hour during an 8 hour shift

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers