You can factorize to simplify the expression
The answer would be,

Hope this helped
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Answer:
the answer is b
Step-by-step explanation:
brainliest pls
Answer:

Step-by-step explanation:

Given cost function C(a) = 7.5a, where a is the number of T-shirts.
Let us complete table.
We need to plug a=1,2,3,4 in above function to get the costs to complete the table.
For a =1
C(1)= 7.5(1) = 7.50
For a =2
C(2)= 7.5(2) = 15.00
For a =3
C(3)= 7.5(3) = 22.50
For a = 4
C(4)= 7.5(1) = 30.00
In order to find the common difference we need to find the diffrences of costs 15-7.50 = 7.50
22.50-15.00=7.50.
<h3>Therefore, common difference is 7.5.</h3>
a represents the number of T-shirts.
Domain of a is the numbers we can take for a.
So, we can take value for a as 0 or greater value.
Therefore, domain for a would be a is gerater than or equal to 0.
<h3>Domain : a≥0</h3>
Answer:
3x6
(3)(6)
6+6+6
for represent the situation
Step-by-step explanation:
the dining room has 3 tables
and at each table there are 6 chairs so multiplication is the operation to use to find the total
therefore the other operations do not represent the situation
but 6+6+6 represents because it is also equal to 18