6. El club de Matemáticas se fijó la meta de recoger 50 lbs de latas de aluminio para reciclar. Llevaron tres bolsas llenas al centro de reciclaje para pesarlas. Las bolsas pesaban
6.3 lbs, 8.1 lbs y 7.45 lbs respectivamente.
¿Cuántas libras de aluminio le falta por recoger para alcanzar la meta?
(1 Punto)
O A. 14.40 lbs
O B. 15.55 lbs
O C. 21.85 lbs
O D. 28.15 lbs

an = 22 + (n-1) *6

110 seats

step-by-step explanation:

an=a1+(n-1)(d)

a1 = 22   this is the first item in the sequence

d =6   this is how the sequence goes up

a)   an = 22 + (n-1) *6

b) a12 = 22 + (12-1) *6

    a12 = 22+11*6

  a12 = 22 +88

  a12 = 110

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.