Mark is solving the following system (1)
X+ y + z = 2
3x+2y + Z = 8
4x-y-73= 16
(2)
(3)
Step 1: He multiplies equation (1) by 7 and adds it to equation (3)
Step 2: He multiplies equation (3) by 2 and adds it to equation (2)
Which statement explains Mark's mistake?

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

idk wbu

step-by-step explanation: