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Matt's cell phone can take video and pictures. One second of video uses the same amount of memory as 4 pictures. His cell phone can store up to 500 pictures.

Enter the maximum number of pictures Matt's camera can store after he has taken 1 minute and 30 seconds of video.

Answer :

First, we note that Matt's cell phone can store up to [tex]$500$[/tex] pictures.

Since his cell phone uses [tex]$4$[/tex] picture-equivalents of memory for each second of video, we begin by converting the video duration into seconds. One minute and [tex]$30$[/tex] seconds is:

[tex]$$
1\text{ minute} + 30\text{ seconds} = 60 + 30 = 90\text{ seconds}.
$$[/tex]

The video takes up memory equivalent to:

[tex]$$
\text{Memory used by video} = 90 \times 4 = 360 \text{ picture equivalents}.
$$[/tex]

To determine the maximum number of pictures that can still be stored, subtract the memory used by the video from the total storage capacity:

[tex]$$
\text{Remaining pictures} = 500 - 360 = 140.
$$[/tex]

Thus, after recording [tex]$1$[/tex] minute and [tex]$30$[/tex] seconds of video, Matt's cell phone can store a maximum of [tex]$\boxed{140}$[/tex] pictures.

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