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15. c = 0.27 + 0.11 m

(a) for m = 10

c = 0.27 + 1.1 = 1.37

(b) for m = 5

c = 0.27 + 0.55 = 0.82

(c) diff in m=10 and m=60

for m=60 ; c= 0.27 + 6.6 = 6.87

diff = 6.87 - 1.37 = 5.5

(16) p = 6c - 300

(a) for c=0 means no sales and zero profit

    for c=15 means profit p = 90 - 300 = -210

the meaning is the profit can only be seen when sales c is greater then 50

(b) for c= 50 ; p=0

    for c=62 ; p=72

this means profit of 72 was recorded

(c) for c = 75 ; p=150

   for c = 100 ; p=300

less profit of 150 would be recorded if the sale of 75 was made instead of 100

Step-by-step explanation:

15. c = 0.27 + 0.11 m

(a) for m = 10

c = 0.27 + 1.1 = 1.37

(b) for m = 5

c = 0.27 + 0.55 = 0.82

(c) diff in m=10 and m=60

for m=60 ; c= 0.27 + 6.6 = 6.87

diff = 6.87 - 1.37 = 5.5

(16) p = 6c - 300

(a) for c=0 means no sales and zero profit

    for c=15 means profit p = 90 - 300 = -210

the meaning is the profit can only be seen when sales c is greater then 50

(b) for c= 50 ; p=0

    for c=62 ; p=72

this means profit of 72 was recorded

(c) for c = 75 ; p=150

   for c = 100 ; p=300

less profit of 150 would be recorded if the sale of 75 was made instead of 100

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.