7 times 10 to the -7 power
1 answer:
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Answer:
29. See table below
30. See attached graph
31. The slope is m= 0.10
The slope represent the cost for every additional call minute.
Step-by-step explanation:
The cost is $0.5 first minute and $0.10 for any additional minutes
If c is the total cost of a call that last t minutes then;
c= 0.10t + 0.5-----where t is the time the call lasted
29. Use the equation above to create the table as;
t {x} c{y}
1 0.6
2 0.7
3 0.8
4 0.9
5 1.0
6 1.1
The graph of this plot is as attached , where the coordinates are
{1,0.6} , {2,0.7} ,{3,0.8} ,{4,0.9} ,{5,1.0}, {6,1.1}
The slope can be found using the formula;
m=Δy/Δx
m= 1.1 - 0.6 / 6-1
m= 0.5 / 5 = 0.10
The slope represent the cost for every additional call minute.
<u><em>Answer:</em></u>
5n-4
<u><em>Explanation:</em></u>
<u>The given expression is:</u>
<u>1- Take the negative as a common factor from both the numerator and the denominator. This will give us:</u>
<u>2- Cancel out the negative sign (common factor) from the numerator and denominator. This will give us:</u>
<u>3- Factor the numerator. This wil give:</u>
<u>4- Finally, cancel out the (17n+19) which common in both numerator and denominator. This will give us the final expression:</u>
5n-4
Hope this helps :)
5n-4
<u><em>Explanation:</em></u>
<u>The given expression is:</u>
<u>1- Take the negative as a common factor from both the numerator and the denominator. This will give us:</u>
<u>2- Cancel out the negative sign (common factor) from the numerator and denominator. This will give us:</u>
<u>3- Factor the numerator. This wil give:</u>
<u>4- Finally, cancel out the (17n+19) which common in both numerator and denominator. This will give us the final expression:</u>
5n-4
Hope this helps :)