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DanielleElmas [232]
3 years ago
8

Aaron buys postcards while he is on vacation.it costs $0.28 to send one postcard. Aaron wants to buy 14 postcards.how much will

it cost Aaron to send all the postcards
Mathematics
1 answer:
Nana76 [90]3 years ago
5 0
It costs $3.92 to send all 14 postcards. Or is this a trick question.
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Holly begins with 1 penny in her piggy bank. She adds 2 pennies on day 1, 4 pennies on day 2, and 8 pennies on day 3. She contin
muminat

Answer:

All the options are correct.

Step-by-step explanation:

Holly begins with 1 penny in her piggy bank. She adds 2 pennies on day 1, 4 pennies on day 2, and 8 pennies on day 3. She continues this pattern for 30 days.

The pattern which she choses is 2^n where n denotes the number of days.

A)

The graph of this sequence would pass the vertical line test.

" Vertical line test: A function can only have one output, y, for each unique input, x " .

Here also y=2^n and x=n.

B)

Each day corresponds to a unique amount of pennies in this sequence.

Since the sequence is increasing, hence option B is correct.

C)

The graph of this sequence would pass the horizontal line test.

A test use to determine if a function is one-to-one.

As for each n we get a unique value.

Hence, option C is correct.

D)

Each amount of pennies corresponds to a unique day in this sequence.

This option is also true as each  amount is a function of number of days.

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3 years ago
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Answer:

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Step-by-step explanation:

(9 + 3) x 8 = (9 x 8) + (3 x x)

(9 + 3) x 8 = (9 x 8) + (3 x 8) = True

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