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Two months ago, the price, in dollars, of a cell phone was c.
a Last month, the price of the phone increased by 10%. Write an expression for the price of the phone
last month.
b. If the price of the cell phone was originally $399. how much is was it last month?
(From Unit 4, Lesson 8)

Respuesta :

Answer:

Step-by-step explanation:1.1c

MrRoyal

The expression for the price last month is 1.1c, and the cell phone was $438.9 last month

The expression for the price last month?

The given parameters are:

  • Initial price = c
  • Increment = 10%

The price last month would be:

Price = Initial price * (1 + Increment)

This gives

Price = c * (1 + 10%)

Evaluate

Price = 1.1c

The actual price last month

We have:

c = 399

So, the expression becomes

Price = 1.1 * 399

Evaluate

Price = 438.9

Hence, the cell phone was $438.9 last month

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