Q17. - Algebra 2

Question

For exercise 15 and 18, use the table below that shows the elevation and average precipitation for selected cities.

City	Elevation (feet)	Average Precip. (inches)
Rome, Italy	79	33
Algiers, Algeria	82	27
Istanbul, Turkey	108	27
Montreal, Canada	118	37
Stockholm, Sweden	171	21
Berlin, Germany	190	23
London, England	203	30
Paris, France	213	26
Bucharest, Romania	298	23
Budapest, Hungary	456	20
Toronto, Canada	567	31

17. Predict the average annual precipitation of Dublin, Ireland, which has an elevation of 279 feet.

Step-by-Step Solution

Answer

The predicted average annual precipitation of Dublin, Ireland is 23 inches. 

Step-1 – Prediction equation.

The prediction equation is $y=-0.04x+34.52$

Step-2 – Substitute the value of x .

It is given that the elevation is 279 feet or we can say that $x=279$.

Put $x=279$ into the prediction equation.

$y=-0.04\left(279\right)+34.52$

Step-3 – Simplify the equation.

$\begin{array}{l}y=-11.16+34.52\\ y\approx 23\end{array}$

The predicted average annual precipitation of Dublin, Ireland is 23 inches.