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slega [8]
3 years ago
7

You and your friend spent a total of $15 for lunch. Your friend’s lunch cost $3 more than your lunch cost. How much did you spen

d for lunch?
Mathematics
2 answers:
castortr0y [4]3 years ago
6 0
The Answer is 6 Dollars

Well here there are two parts You and your friend spent 15 dollars your friends lunch cost 3 more than yours <span>

6=x is the amount you spent on lunch.
Your friend spent $3 more so add $3 to the amount you spent to get...
$9 spent by your friend. 
You=$6
Friend=$9
Total=$15
To prove the solution is valid, plug 6 in for x. 
15=3+2(6)
15=3+12
15=15 thus proving the solution is valid.</span>
Veronika [31]3 years ago
4 0
To solve for this, we will create a system of equations.
x + y = 15
x = y + 3
Let's try numbers that add up to 15.
I will try 6 and 9, 9 for x, 6 for y.
6 + 9 = 15
9 = 6 + 3
These system of equations works!
Since x is your friend's lunch, y is yours.
You spent $6.
I hope this helps!

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6 0
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Someone answer this for me
Andru [333]

Answer:

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Step-by-step explanation:

I think is the right answer hope it helps

3 0
3 years ago
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Fittoniya [83]

Answer:

\displaystyle 702

Step-by-step explanation:

we are given a exponential function

\displaystyle f(x) =  {3}^{x + 1}  - 22

where x represents the number and f(x) represents the amount

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to figure out the average rate of change between 3 and 6 we can consider the average rate of change formula given by

\displaystyle m =  \frac{ f(x)_ {2} -  f(x)_{1} }{ x_{2} -  x_{1} }

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\displaystyle m =  \frac{ 2165 -  59 }{6 - 3 }

simplify substitution:

\displaystyle m =  \frac{2106 }{3 }

simplify division:

\displaystyle m =  702

hence, the average rate of change between 3 and 6 is <u>7</u><u>0</u><u>2</u>

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