Emma receives $\$150$ from her parents as her allowance at the beginning of every month. Suppose E

Question

Emma receives $\$150$ from her parents as her allowance at the beginning of every month. Suppose Emma spends $\$4$ each day. Find the amount of money Emma has left after $5$ days, $15$ days, $25$ days. Given that $\$M$ represents the amount of money Emma has after $n$ days, complete the table below. On a sheet of graph paper, using a scale of $2$ cm to represent $5$ days on the horizontal axis and $1$ cm to represent $\$10$ on the vertical axis, plot the pairs of values of $(n, M)$ given in the table above. By drawing a straight line graph through all the points in (iii), find how much money Emma has left at the end of a month. (Assume one month has $30$ days.)

Accepted Answer

(i)(a) $\text{SGD }130$ (i)(b) $\text{SGD }90$ (i)(c) $\text{SGD }50$ (ii) $M=150,130,90,50$ (iii) Graph of $M=150-4n$ (iv) $\text{SGD }30$

Linear Graphs in Real Life Problems

Linear Graphs in Real Life Problems

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