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Given the functions f(x) and g(x) below, find all solutions to the equation f(x) = g(x) to the nearest hundredth.

f(x) = −0.2x −3 2.3x −2 7x − 10.3
g(x) = −∣0.2x∣ + 4.1

User Amfasis
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Answer:

To find the solutions to the equation f(x) = g(x), we need to set the two functions equal to each other and solve for x.

Setting f(x) = g(x), we have:

−0.2x − 3 + 2.3x − 2 + 7x − 10.3 = −|0.2x| + 4.1

Combining like terms, we get:

8.1x - 15.3 = -|0.2x| + 4.1

Next, we'll consider two cases for the absolute value term.

Case 1: 0.2x ≥ 0

In this case, the absolute value can be removed, and the equation becomes:

8.1x - 15.3 = -0.2x + 4.1

Combining like terms again:

8.3x - 15.3 = 4.1

Adding 15.3 to both sides:

8.3x = 19.4

Dividing both sides by 8.3:

x ≈ 2.34 (rounded to the nearest hundredth)

Case 2: 0.2x < 0

In this case, we need to change the sign of the absolute value term and solve separately:

8.1x - 15.3 = 0.2x + 4.1

Combining like terms:

7.9x - 15.3 = 4.1

Adding 15.3 to both sides:

7.9x = 19.4

Dividing both sides by 7.9:

x ≈ 2.46 (rounded to the nearest hundredth)

Therefore, the solutions to the equation f(x) = g(x) to the nearest hundredth are x ≈ 2.34 and x ≈ 2.46.

User Tiddo
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