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Vikki [24]
2 years ago
15

A sandwich store charges $20 to have 3 turkey subs delivered and $26 to have 4 delivered. Is the relationship between number of

turkey subs delivered and the amount charged proportional?
no it's not but how do I know it's not? a simple answer will do.​
Mathematics
1 answer:
BabaBlast [244]2 years ago
8 0

Answer:

Step-by-step explanation:

The cost per sandwich when 3 are delivered is $20/3 or $6.67 each.

The cost per sandwich when 4 are delivered is $26/4 or $6.50 each.

The average cost per sandwich changes with the number delivered, so it is not proportional.  The cost decreases per sandwich as the volume of sandwiches increases.  One can't predict the cost of 6 delivered sandwiches based on the information provided.  If it were proportional, the cost could be calculated on the basis of the slope of the line.  If all sandwiches cost $6.50 each, regardless of the volume ordered, the slope of a line relating number ordered and total cost would have a constant slope of 6.50.  That isn't the case in this problem.  The slope keeps changing.

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HELP PLEASEE<br><br> Multiply negative 1 over 6 multiplied by negative 1 over 5
navik [9.2K]
Negative 1 over 11
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1 over 30
1 over 11
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8 0
2 years ago
Y&lt; 3x + 6<br> Determine if (2,4) is a solution
kap26 [50]

Answer:

Yes

Step-by-step explanation:

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3 0
2 years ago
Read 2 more answers
If the interest rate is 7%, how many years will it take for your bank balance to double from $1,000 to $2,000?Enter the followin
svlad2 [7]

Answer:

It will take 14.29 years for your bank balance to double from $1,000 to $2,000.

Step-by-step explanation:

This is a simple interest problem.

The simple interest formula is given by:

E = P*I*t

In which E are the earnings, P is the principal(the initial amount of money), I is the interest rate(yearly, as a decimal) and t is the time.

After t years, the total amount of money is:

T = E + P.

If the interest rate is 7%, how many years will it take for your bank balance to double from $1,000 to $2,000?

We have that P = 1000, I = 0.07

We want to find t when E = 1000, so T = P + E = 2000.

E = P*I*t

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t = \frac{1}{0.07}

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It will take 14.29 years for your bank balance to double from $1,000 to $2,000.

8 0
3 years ago
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Answer:

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Step-by-step explanation:

5 0
3 years ago
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You can show your work if u want to<br> Find 2 numbers if Their sum is −7 and their difference is 14
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The larger number is (-7+14)/2 = 3.5.

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The two equations a+b=-7, a-b=14 can be solved to get these results. It is genrally convenient to solve them by adding one to the other, or subtracting one from the other.

7 0
3 years ago
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