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The price of a pizza is [tex] \[tex]$7.99 [/tex] plus an additional [tex] \$[/tex]1.35 [/tex] for each topping.

Write a function rule [tex] f [/tex] that gives the total price as a function of the number of toppings, [tex] x [/tex].

[tex]
f(x) =
[/tex]

\begin{tabular}{|c|c|}
\hline
number of toppings [tex]$(x)$[/tex] & price [tex]$f(x)$[/tex] \\
\hline
0 & 7.99 \\
\hline
1 & 9.34 \\
\hline
2 & 10.69 \\
\hline
6 & 15.09 \\
\hline
10 & 21.49 \\
\hline
\end{tabular}

Sagot :

Sure, let's solve the problem step-by-step.

We are given that the price of a pizza is [tex]$\$[/tex] 7.99[tex]$ plus an additional $[/tex]\[tex]$ 1.35$[/tex] for each topping.

First, we need to write a function rule that gives the total price as a function of the number of toppings, [tex]$x$[/tex]. We can express the total price [tex]$f(x)$[/tex] as follows:

[tex]\[ f(x) = 7.99 + 1.35x \][/tex]

where [tex]$x$[/tex] is the number of toppings.

Now, we need to calculate the values of this function for given [tex]$x$[/tex] values:

1. For [tex]$x = 0$[/tex] (0 toppings):
[tex]\[ f(0) = 7.99 + 1.35(0) = 7.99 \][/tex]

2. For [tex]$x = 1$[/tex] (1 topping):
[tex]\[ f(1) = 7.99 + 1.35(1) = 7.99 + 1.35 = 9.34 \][/tex]

3. For [tex]$x = 2$[/tex] (2 toppings):
[tex]\[ f(2) = 7.99 + 1.35(2) = 7.99 + 2.70 = 10.69 \][/tex]

4. For [tex]$x = 6$[/tex] (6 toppings):
[tex]\[ f(6) = 7.99 + 1.35(6) = 7.99 + 8.10 = 16.09 \quad (\text{Note: correction from the table provided}) \][/tex]

5. For [tex]$x = 10$[/tex] (10 toppings):
[tex]\[ f(10) = 7.99 + 1.35(10) = 7.99 + 13.50 = 21.49 \][/tex]

So, the prices for each number of toppings in the table are derived as follows:

\begin{tabular}{|c|c|}
\hline number of toppings [tex]$(x)$[/tex] & price [tex]$f(x)$[/tex] \\
\hline 0 & 7.99 \\
\hline 1 & 9.34 \\
\hline 2 & 10.69 \\
\hline 6 & 16.09 (corrected) \\
\hline 10 & 21.49 \\
\hline
\end{tabular}

The function rule [tex]\( f \)[/tex] that gives the total price as a function of the number of toppings [tex]\( x \)[/tex] is:
[tex]\[ f(x) = 7.99 + 1.35x \][/tex]