Dados os coeficientes a, b e c escreva as equações do 2o grau corretamente: a) a= 2 b= -2 c= 3
b) a= 12 b=15 c= 0
c) a= 0 b= 1 c= 0
d) a= 3 b= -4 c= -9
e) a= 8 b= -8 c= 13
f) a= 11 b= 55 c= -13
g) a= 16 b= 17 c= -2
h) a= 3 b= 0 c= 0

Which expression shows the sum of the polynomials with like terms grouped together

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)