William has $27,000 invested in stock A and stock B. Stock A currently sells for $30 a share and stock B sells for $90 a shar
e. If stock B doubles in value and stock A goes up 50%, his stock will be worth $49,500. How many shares of each stock does he own?
1 answer:
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The initial value of the graph is where . Thus, in this case, the initial value is 12.
The rate of change of the graph is essentially the slope of the graph. In this case, we can use the slope formula:
and
are points on the graph
Let's use two points from the chart to find the slope:
In this case, the rate of change of the graph is 9.