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All courses Math Foundations · MF.QR.2 60 of 60
State a final answer with correct units, interpretation, and reasonableness justification when the context requires it.

Match a result to the right final answer sentence

Problem
Mia bought \(3~\text{movie}~\text{tickets}\) at \(\$6~\text{each}\), producing a calculation result of \(18\). State what \(18\) means in context, including the quantity and units.
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Hint

Start by asking: what does the computed 18 represent here—number of tickets, cost of one ticket, time, or total money spent?

Match the number to the quantity the question asks for. “How much did Mia spend?” means a total amount of money in dollars.

Solution walkthrough

01

Identify the calculation's factors

\[3~\text{tickets}\times~\$6~\text{per}~\text{ticket}\]

The factors describe a ticket quantity and a unit price.

02

Track the units

\[\text{tickets}\times~(\text{dollars}/\text{ticket})=\text{dollars}\]

The ticket units cancel, so the product measures money spent.

03

Confirm the product

\[3\times~6=18\]

Three six-dollar tickets have a total cost of eighteen dollars.

04

Interpret rather than repeat

\[18~\text{means}~\text{total}~\text{ticket}~\text{cost},~\text{not}~\text{ticket}~\text{count}~\text{or}~\text{time}\]

A contextual statement must name what the number measures and include dollar units.

05

Report the result in context

\[\text{Mia}~\text{spent}~\$18~\text{on}~\text{the}~\text{tickets}.\]

This complete sentence gives the quantity, value, units, and situation.

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Another way

  1. Add the three equal prices: $6+$6+$6=$18, confirming total spending.

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Common mistake

Do not say Mia bought 18 tickets; the product's units are dollars because ticket count was multiplied by dollars per ticket.

Solution walkthrough video