Jenna is creating a mural for her bedroom wall.She would like to copy a picture that is 2 inches by 2.5 inches.She uses a copy machine to enlarge it by a factor of 4.Then she projects it on her wall at a factor of 12.What are the dimensions of the mural?

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Answer 1 · 2018-05-01T01:44:08

The dimensions of the mural are #96# in by #120# in.

First, start with the original dimensions:

#2# in by #2.5# in

Because you're enlarging it by a factor of 4, both sides will be multiplied by 4.

#2# x #4# = #8#
#2.5# x #4# = #10#

Now, the dimensions are #8# in by #10# in.

"Then she projects it on her wall at a factor of 12."

Repeat the same process, but with the new dimensions:

#8# in x #12# = #96# in
#10# in x #12# = #120# in

Therefore, the dimensions of the mural are #96# in by #120# in.