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Scarlett went shopping for a new phone. Sales tax where she lives is . What number should she multiply the price of the phone by to find the total plus tax in one step?Answer:
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Q. Scarlett went shopping for a new phone. Sales tax where she lives is . What number should she multiply the price of the phone by to find the total plus tax in one step?Answer:
- Multiply by Total Factor: To find the total cost including tax in one step, Scarlett needs to multiply the price of the phone by a factor that includes both the original price and the sales tax. The sales tax is , which means that for every dollar, an additional is charged as tax.
- Add Original Price: To include the original price of the phone, we start with the number (which represents of the original price). To this, we need to add the sales tax rate expressed as a decimal.
- Convert Tax Rate: The sales tax rate is , which as a decimal is . We add this to to get the total factor.Total factor =
- Calculate Total Factor: Performing the addition gives us:Total factor = This is the number Scarlett should multiply the price of the phone by to find the total cost including tax in one step.
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