Question

Which expressions, when evaluated with y = –7, are positive in value?



Choose all answers that are correct.



A.


18 + 2y


B.


–3y + (–17)


C.


–2y – 23


D.


–30 – 4y

Answer 1

@Conqueror @confluxepic

Answer 2

Here let's plug in -7 where it belongs in each of the equation in your choices :)

A.
\(18~ +~ 2\times (-7)\)


B.
\(-3\times (-7)~+~ (–17)\)


C.
\(-2\times (-7)~-~23\)


D.
\(-30 ~- ~4~\times~(-7)\)

Let's solve Option A first :)
\(18~ +~ 2\times (-7)\)

First we must multiply, and the only multiplication in this problem is \( 2\times (-7)\), so what is \(2\times (-7)\)?

Answer 3

(refresh if you see any black diamonds with question marks)

:)

Answer 4

Are you there?