*NEED AN ANSWER ASAP* My book didn’t explain how to solve these ones.

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

Select the quadratic that has root x = 8 and x = -5

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?