Answer:
8
Step-by-step explanation:

× 8
= 3
In algebra:
× y = 3
y = 3 ÷ 
y = 8
The question is incomplete! Complete question along with answer and step by step explanation is provided below.
Question:
The tank for a car holds 17 gallons. The gasoline gauge shows the tank is 3/4 full. How much gas is still in the tank?
Give your answer as a whole number or as a mixed fraction reduced to lowest terms.
Answer:
Step-by-step explanation:
The tank for a car holds 17 gallons.
The gasoline gauge of the car shows that the tank is 3/4 full.
We are asked to find the remaining gasoline in the tank.
Therefore, the remaining gas in the tank is
gallons.
Alternatively:

Amount of gasoline consumed = 
Amount of gasoline left = total - consumed
Amount of gasoline left = 
Substitute a number for each variable
Ex.
2x x=5
(2)(5)
=10
Answer : YOU HAVE TO SHOW THE WHOLE PIC PLS SO I CAN HELP U
Step-by-step explanation:
Answer:

Step-by-step explanation:
La función es

Diferenciando con respecto a
obtenemos

Igualar con cero

Doble derivada de la función

Entonces, la función es máxima cuando el número de unidades vendidas,
,