Question

Anna started with $\$10$. She saves an additional amount of $\$5$ each week. Which graph can be used to determine the total amount saved in dollars, $t$, after a given number of weeks, $w$?

[Hint: 𝒕 is the dependent variable and 𝒘 is the independent variable. Create a table for the given equation, by substituting different values of t and w.]

Answer 1

Amount of money Anna had $=\$10$.
Amount she saved in each week $=\$5$
The total amount saved in dollars, $t$, is the dependent variable. The number of weeks, $w$, is the independent variable.
The equation can be represented as $t=5w+10$.
The table showing the equation is as given below.
$\begin{array}{cccccc}w& 0& 1& 2& 3& 4\\ t& 10& 15& 20& 25& 30\end{array}$
The graph representing the table value is option D.