Aquadratic equation ax^2+bx+c=0 has -11 and 4 as solutions. find the values of b and c if the value of a is 1 (hint, use zero factor property in reverse)

the quadratic equation has a=1, b= and c =

At dinner, 2/5 of the people had fish and 1/3 had chicken. if everyone else had lamb, what fraction of the people had lamb? and if 40 people had lamb , calculate the total number of people at the dinner.

Look at attachment. has all info needed. need

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?