What is most likely the combined effect of having multiple modalities, mediums, and formats in the heart
model?
People who experience the heart model will be
informed by the video.
O People who visit the model will understand the
human heart and how it functions.
O People who visit the model will gain the most
information from the brochure.
O People who experience the model will become
experts in heart anatomy.

not concrete, existing in thought or as an idea but not having a physical or concrete existence

substitute y = 2x - 4 to x + 2y = 12:

x + 2(2x - 4) = 12     use distributive property

x + (2)(2x) + () = 12

x + 4x - 8 = 12     add 8 to both sides

5x = 20     divide both sides by 5

x = 4

put the value of x to the first equation:

y = 2(4) - 4

y = 8 - 4

y = 4

the answer is a.

explanation:

the clause "looking toward the south" modifies "a funnel cloud." it's not really the cloud that's "looking," but grammatically, that clause is modifying the cloud.