Adding and subtracting functions g(x) = 2x f (x) = −2x^3 + 2x Find g(x) + f (x)
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Answer:
Step-by-step explanation:
Let be "x" the price per pound for grapefruit, "y" the price per pound for oranges.
We know that Steve buys 2 pounds of grapefruit and 3 of oranges for $7.20.
This means that the sum of the products of and
is $7.20. Then, we can write this equation to represent it:
Kennedy buys 4 pounds of grapefruit and 2 pounds of oranges for $8.80.
This means that the sum of the products of and
is $8.80. Then, we can write this equation to represent this:
Therefore, we get that the system of equations that models the situation is: