Question

A city bus uses 5 galloms of gas every hour for 6 hours let -5 represent the change in gas every hour. Which expression represents the total change in gas after 6 hours

Answer 1

Answer:

$\Delta G=G_i-30$

Step-by-step explanation:

The change in gas is the substraction of the used gas to the initial amount of gas in the bus:

$\Delta G=G_{i}-G_{u}$

where $G_i$ is the initial amount gas in gallons, and $G_u$ is the used gas, also in gallons.

The bus uses 5 gallons every hour for six hours, so the gas used is in those 6 hours is:

$G_u=5*6\\G_u=30$

substituting this into the expression for the total change in gas

$\Delta G=G_{i}-G_{u}$

the total change after 6 hours is:

$\Delta G=G_i-30$

since we don't know the initial amount of Gas $G_i$ we just leave it indicated in the expression.

Answer 2

Answer: 6x(-5) is the answer

Step-by-step explanation: