Multiply the expressions.
90
x
3
−
129
x
2
+
13
x
+
22
Answer:
8a+9
Step-by-step explanation:
You have to add the like terms.
4.5a+7+3.5a+2
4.5a+3.5a=8a
7+2= 9
8a+9
Answer:
The situation that represents this situation is:

Step-by-step explanation:
The amount of time t needed to assemble the set is inversely proportional to the number people n working.
This means that:

In which k is the constant of proportionality.
Twelve people can assemble the set in 5 hours.
This means that for
. We use this to find k.



Write an equation to represent the situation.

none of those are right it is 4 because there is no x behind the 4.
The equations become y=-x+4 and y=-⅔+18. Because of this, I think the graph is the one in the first attachment and the top graph.