Answer:
first one
Step-by-step explanation:
Tracey bought 10 movies
some cost 13 and the others 16
Let x be the movies that cost 13 and y ones that cost 16
we can state that
since Tracey both ten
since the total price is 139
so the system is :

Answer:
y=−2x+5
Step by step explanation:
You need to put it in standard form which is y = mx+b.
If you want to find the Y intercept, substitute 0 into X.
X = 2.5
If you want to find the X intercept, substitute 0 into Y
Y = 5
The slope is -5 by the way.
3) 0.5(12m-22n)=0.5(12m)-0.5(22n)
=6m-11n
4) 2/3(18x+6z) =2/3(18x)-2/3(6z)
=12x-4z
5)2x+12=2(x+6)
6)12x+24=12(x+2)
Since there are 43560 feet in an acre, 285 feet is 0.654% of an acre.
Hope this helps!