Part a: 30 gallons (i think)
part b: 220
Using logical operators, it is found that:
A. 
B. 
C. 
D. 
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- The <em>logical operator</em> and is defined by symbol
. - The <em>logical operator</em> or is defined by symbol
. - The logical operator not is defined by symbol
. - Event E: Day shift.
- Event F: Less than 4 years.
- Event G: Contributes to the retirement plan.
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- At <em>item a</em>, night shift and worked for more than 4 years, thus events negative E and negative F, that is:

- At <em>item b</em>, day shift and worked for less than 4 years, thus events E and F, that is,

- At <em>item c</em>, night shift or more than 4 years, that is, events negative E or negative F, that is:
. - At <em>idem d</em>, day shift or less than 4 years, that is, E or F, thus

A similar problem is given at brainly.com/question/23508811
700+50x
x being years so x=10
700+50(10)=700+500=1,200
Answer:
The radius of a circle is 4.5 cm.