Answer:
A
Step-by-step explanation:
No others make sense because you can't use multiplication in this problem and well it's hard to explain honestly lol. But I'm almost certain your answer is A
(x + 7) (x - 4)
First, apply the FOIL method (a + b) (c + d) = ac + ad + bc + bd / Your problem should look like:

- 4x + 7x - 28
Second, gather the like terms. / Your problem should look like:

+ (-4x + 7x) - 28
Third, simplify. / Your problem should look like:

+ 3x - 28
Answer:
+ 3x - 28
Answer:
small: 6.25
large: 18.25
Step-by-step explanation:
Set the large boxes as x and the small boxes as y (The weight is the constant).
3x+5y=86
6x+2y=122
Now just solve the systems of equations using either substitution or elimination.
-6x-10y=-172 multiply the whole equation by -2 to eliminate
6x+2y=122, add the equations
-8y=-50
y= 6.25
Plug in y either equation:
3x+5(6.25)=86
3x=86-31.25
3x=54.75
x=18.25
Each small box weighs 6.25 kilograms, each large box weighs 18.25 kilograms, to check plug in the values to the other equation to see if they add up correctly.
Answer:ty
Step-by-step explanation: