<h2>
There are infinite solution of y.</h2>
Step-by-step explanation:
Given,
y = 
- 10x + 25
To find, the total number of solutions = ?
∴ y = - 10x + 25
⇒ y = - 2(x)(5) + 
⇒ y = 
There are infinite solution of y.
Thus, there are infinite solution of y.
I would set this up as a a proportion:
·
17x = 1360
x = 20 cm
Answer:
15(2r^2+2r+5)
Step-by-step explanation:
I'm more of a guess and check type of person, but 15 x 2r^2 = 30r^2, 15 x 2r = 30r, and 15 x 5 = 75
Cost of month plan = $40
Cost of minutes used = $0.45 after 700 minutes
Total cost = $48.10
Let x be the total minutes used
Total cost = 40 + 0.45(x - 700)
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Form the equation and solve x
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40 + 0.45(x - 700) = 48.10
40 + 0.45x - 315 = 48.10
0.45x - 275 = 48.10
0.45x = 48.10 + 275
0.45x = 323.10
x = 323.10 ÷ 0.45
x = 718
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Answer: John had used 718 mins this month
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