Answer 18 19 and 20 and 21 if you can! offering many points! need fast, algrebra 1

review of numbers;

whole number: 0,1,2,3,4,5, etc

integers: whole numbers and their negatives so -5,-4,-3,-2,-1,0,1,2,3,4...

rational numbers: numbers that can be written in form a/b where a and b are integers, so like 1/2 and 3/5

real numbers: includes rational numbers and irrational numbers like pi

18

x values are -3,-2,-1, 0, 1 which are integers

19. for y=x+3, you cand use any real number, so the answer would be real numbers

20.I don't know what error our friend made since the plots are correct but the red loines are wrong

21. just connect the dots on the plot, plot (0,3), (1,4) and connect the dots witha line

step-by-step explanation:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

step-by-step explanation:

given that megan owns a clothing boutique.

the profits of 2010, 11, are recorded and shown as follows:

years since     2010 0     1     2     3       4       5

profits made in 1000's   39       84     111     120   111     84

we find that profit gradually increases form 2010 to 2013 upto 120,   then starts decreasing.

the profits for 2012 and 2014 are the same while that of 2011 and 2015 are also the same.

this shows that there is symmetry about the line profit = 120000

hence answer is:

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is           symmetric about the line y = 120,000.

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step-by-step explanation: