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millernicholas622
09.10.2019 •
Mathematics
Sally wants to buy her friend a bouquet for his birthday. she wants it to contain both carnations and roses. she has $27.30 to spend. carnations cost $1.42 each and roses cost $2.35 each. which graph below represents the possible combinations of numbers of carnations and roses sally can afford to buy?
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Ответ:
The answer to your question is: letter A
Step-by-step explanation:
Data
Total cost = $27.30
carnations = $1.42 = x
roses = $2.35 = y
Equation
1.42x + 2.35y = 27.30
Solve for y
2.35y = -1.42x + 27.30
y = -(1.42/2.35) + (27.30/2.35)
y = -0.604x + 11.61
Find x and y-intercepts
When x = 0 y = -0.604(0) + 11.61
y = 11.61
Point (0, 11.61)
When y = 0
0 = -0-604x + 11.61
x = 11.61/ -0.604
x = 19.22
Point (19.22, 0)
Look for which graph has these 2 points.
I think is letter A
Ответ: