Para un envase cerrado con forma de cilindro circular recto de volumen 16π. Pulg3, el costo del material para las tapas es de 2 centavos por pulg2 y el costo del material para la superficie lateral es de 1 centavo por pulg2. a) Si el radio de la base del cilindro mide X pulgadas, exprese el costo total del material en centavos como una función de X.

b)Cuál es el dominio de la función.

c)Utilice la gráfica para encontrar con una precisión de centésimos, el radio de la base para el cual el costo del material es el mínimo del material.​

it should be a and d. lmk if i'm wrong xd

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

seven students earned $833 by shoveling snow. if they share the money equally, how much money will each student get

answer: each student earns $119

step-by-step explanation:

to find the answer you have to divide 833/7 which is 119