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I don't understand how the second answer is E

Which 2 ways can 2t-u+3v be expressed in terms of v, if 5t=2u & u-1=v?
A. 1/5(14v-1) B. 2V-3 C. (20+140V)/100 D. 1/4V+20 E. 2.8V-.2

Answer choices: A) A&D B) A&B C) B&E D) A&E
The answer was D) A&E

I see what they did to get A, but how did they get E?

User-generated avatar Jessica King

Added on February 16, 2019 23:27


1 Response

If you agree that 1/5(14V-1) is an answer, which is choice A then just distribute the 1/5 and get: (14/5)V - (1/5). Here (14/5) = 2.8 and (1/5) = 0.2. Good Luck!

User-generated avatarTashfeen

Responded on September 18, 2019 00:17