Step-by-step explanation:
One pound = $0.65
Total cost = c
Number of pounds to ship = p
Part a:
c = 0.65p
When p = 2
c= 0.65(2)
c = $1.30
Part b:
One pound = $0.65 - $0.05 = $0.60
c= 0.6p
Answer: (a) $1.30 (b) c= 0.6p
The exponential function is 
Step-by-step explanation:
The exponential function in the form of 
First find the value of a and b if x=0 and y=19

Find the value of b in 
where x=6,y=1216 and a=19
![1216=19b^6\\\\\\1216/19=b^6\\\\\\64=b^6\\\\\sqrt[6]{64} =b\\\\2=b](https://tex.z-dn.net/?f=1216%3D19b%5E6%5C%5C%5C%5C%5C%5C1216%2F19%3Db%5E6%5C%5C%5C%5C%5C%5C64%3Db%5E6%5C%5C%5C%5C%5Csqrt%5B6%5D%7B64%7D%20%3Db%5C%5C%5C%5C2%3Db)
The function is 
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Exponential function :brainly.com/question/11925273
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Assuming the order of selection doesn't matter:

Hey, I believe the answer is A with 4.
If you multiply 2x-y=3 by 4, you'll get
8x-4y=12
By doing this, you can cancel out the y's to get
11x=22
Which will result in x=2