Luiza bought a gas can for 18 point 5 0 dollars at the gas station. She put gas in the can that cost 3 point 5 0 dollars per gallon. All together, Luiza spend 32 point 5 0 dollars for the gas and the gas can. Which number line shows the number of gallons of gas she put in the can?
Answer
A
Image with description A number line labeled from negative 10 to 10 by ones. Only even numbers are labeled. A closed circle is on 4.
B
Image with description A number line labeled from negative 10 to 10 by ones. Only even numbers are labeled. A closed circle is between the tick mark labeled 10 and the next tick mark.
C
Image with description A number line is labeled from negative 10 to 10 in increments of 1. Only even numbers are labeled. A closed circle is between the first tick mark after 0 and the tick mark labeled 2.
D
Image with description A number line labeled from negative 10 to 10 by ones. Only even numbers are labeled. A closed circle is close to the first tick mark after 8.
Explanation
Subtract the cost of the gas can from the total: $32.50 − $18.50 = $14.00 spent on gas. At $3.50 per gallon, Luiza bought $14.00 ÷ $3.50 = 4 gallons. Choice A shows a closed circle at 4.
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