Question

Please help
Find 3x − y − 3z if x = −2, y = 1, and z = −2.
A) −13
B) −1
C) 1
D) 13
am i correct i thinks the anwser is D
3 * -2 - 1 - 3 * -2
= -6 - 1 - 3 * -2
= -6 - 1 - 6
= -7 - 6
= -1

Answer 1

technically a negative times a negative is a positive so the 3rd line should be -6-1+6 but you still get the same answer which is -1 :)

Answer 2

I read it back and i made a typo on my scratch paper i have the 3rd line -6 -1 - 6

Answer 3

It should be a positive 6 because its -3 * -2

Answer 4

i know i worked the problem out on paper and that is what i got i put -6 buy mistake

Answer 5

oh okay lol it makes sense though right?