With a coupon you can buy up to 6 medium pizzas at $8 each. What is the domain of this graph?
Cost of Pizzas
55
50
45
40
35
30
($) 1803
25
20
15
10
5
0
1 2 3 4 5 6 7 8 9 10 11
Number of pizzas
A. {0, 8, 16, 24, 32, 40, 48}
B. All integers

show us the picture

step-by-step explanation:

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< xcy ≅ < xby

step-by-step explanation:

in δcax and δbax,

so, δcax ≅ δbax (side-angle-side or sas)

since δcax ≅ δbax, we can conclude < acx ≅ < abx

in δacy and δaby,

so, δacy ≅ δaby (side-angle-side or sas)

since δacy ≅ δaby, we can conclude < acy ≅ < aby

now,

< acy ≅ < aby

=> < acx + < xcy ≅ < abx + < xby

=> < acx + < xcy ≅ < acx + < xby   (since < acx ≅ < abx already proved above)

subtracting < acx from both sides, we get

< acx + < xcy -< acx ≅ < acx + < xby -< acx

cancelling out < acx and -< acx from both sides, we get

< xcy ≅ < xby (proved)

step-by-step explanation:

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