i think it’s is a for the first one
Answer:
both choices with 2x+y = -3
Step-by-step explanation:
to have the solution (-4, 5), that point must be on both equations/functions, meaning it must be on either one.
in other words, if the point is not on at least one of the functions, it cannot be a solution for that system.
the given function
2x + y = -3
looks like for the point (-4, 5)
2×-4 + 5 = -3
-8 + 5 = -3
-3 = -3
correct.
but
-2x + y = -3
looks like for (-4, 5)
-2×-4 + 5 = -3
8 + 5 = -3
13 = -3
wrong. the point is not on this function.
as we can therefore rule out 2 of the answer options, the other 2 most be correct.
Answer:
3x+19
Step-by-step explanation:
2x are like terms and 4 and 15 are like terms so you add them together
Answer:(15k-60)/2
Step-by-step explanation:
Mr. Grant can buy three packs of 10 (3x10=30) or he can buy thirty single packs (30x1=30)
