Question 3 (3 points)
An aircraft has a maximum of 30 first class seats and 220 economy seats.

A first class seat costs $240 and an economy class seat costs $120.

A flight will be cancelled if the money taken for the seats is less than $28,800.

x=the number of first class seats

y=the number of economy class seats

Write three inequalities to represent the situation

(use < and >, ignore "or equal to" situations)

Consider the function f left parenthesis x right parenthesis equals 4 x squared minus 3 x minus 1f(x)=4x2−3x−1 and complete parts (a) through (c). (a) find f left parenthesis a plus h right parenthesis f(a+h); (b) find startfraction f left parenthesis a plus h right parenthesis minus f left parenthesis a right parenthesis over h endfraction f(a+h)−f(a) h; (c) find the instantaneous rate of change of f when aequals=77.