g(n)=2n+4 h(n)=n+2 find (4g-2h)(8)

asked by guest
on Nov 23, 2024 at 12:11 pm



You asked:

Given the following function definitions: \[\begin{aligned}g\left( n \right) &= 2 n + 4\\ h\left( n \right) &= n + 2\end{aligned}\] Evaluate \(4 \cdot g\left( 8 \right) - 2 \cdot h\left( 8 \right)\).

MathBot Answer:

Assuming the variables \(g\) and \(h\) refer to the functions of the same names. If this is incorrect, please retry your query. Either include arguments for all function calls (i.e. \(f(x) \cdot g(x)\) instead of \(f \cdot g\)) or use different variables in the expression to be evaluated.

$$\begin{aligned}4 \cdot g\left( 8 \right) - 2 \cdot h\left( 8 \right)&=60\end{aligned}$$

$$\begin{aligned}4 \cdot g\left( 8 \right) - 2 \cdot h\left( 8 \right)&=- 2 \cdot \left(2 + 8\right) + 4 \cdot \left(4 + 2 \cdot 8\right)\\4 \cdot g\left( 8 \right) - 2 \cdot h\left( 8 \right)&=4 \cdot \left(4 + 2 \cdot 8\right) - 2 \cdot 10\\4 \cdot g\left( 8 \right) - 2 \cdot h\left( 8 \right)&=-20 + 4 \cdot \left(4 + 2 \cdot 8\right)\\4 \cdot g\left( 8 \right) - 2 \cdot h\left( 8 \right)&=-20 + 4 \cdot \left(4 + 16\right)\\4 \cdot g\left( 8 \right) - 2 \cdot h\left( 8 \right)&=-20 + 4 \cdot 20\\4 \cdot g\left( 8 \right) - 2 \cdot h\left( 8 \right)&=-20 + 80\\4 \cdot g\left( 8 \right) - 2 \cdot h\left( 8 \right)&=60\\\end{aligned}$$

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