Atotal of 17 cars and trucks get gasoline at the gas station. each car gets 8 gallons of gasoline. each truck gets 19 gallons of gasoline. the station sells 169 gallons of gasoline. how many cars were at the gas station? how many trucks were at the gas station?

There were 14 cars and 3 trucks at the gas station

Step-by-step explanation:

This problem can be modeled by a system of equations.

I am going to say that x is the number of cars at the gas station and y is the number of trucks at the gas station.

The problem states that there were a total of 17 cars and trucks get gasoline at the gas station. It means that x + y = 17.

The problem also states that each car gets 8 gallons of gasoline and each truck gets 19 gallons of gasoline, and that the station sells 169 gallons of gasoline. So 8x + 19y = 169.

So, we have a system with these following equations:

1) x + y = 17

2) 8x + 19y = 169

I am going to write x as a function of y in 1) and replace it in 2)

x = 17 - y

8(17 - y) + 19y = 169

11y = 169 - 136

11y = 33

y = 3

So, there were 3 trucks at the gas station.

From 1)

x = 17 - y

x = 17 - 3

x = 14

There were 14 cars at the gas station.

the clues that signal the reader should change tone are the punctuation marks, the grammatical signs. for example, the quotation marks at the beginning of something someone else said literally or the exclamation marks.

the tone of the first line of dialogue until "gettysburg" is a kind tone, a tone of advise. the narrator is trying to the other person in doing something he or she obviously is finding hard to do by giving a piece of advise and bringing up a memory of a successful similar case.

the clue that the reader understand how to read the word "bang" is the exclamation mark. it gives the word a surprise tone, a strong accent.

the best tone for reading the word "bang" is an exciting tone, a surprise one, even a loud one.

the words that should be read with a formal tone are the ones that give factual information. the sentence: mister lincoln couldn't think of anything to say at the gettysburg" gives information about an event and it needs to be read formally, also, when the narrator wants to transmit calmness, a formal and slow tone is needed, because people also transmit messages with the vibrations of our voices and tones.