A telecommunications engineer is modeling the signal strength, $S$ microvolts, of a transmitter at a distance $x$ km. A plot of $log_{10} S$ against $x$ produces a straight line $l$ .

The line $l$ passes through the points $(0, 3.42)$ and $(12, 1.02)$ .

Write down an equation for $l$ .

Hence, or otherwise, express $S$ in the form $kb^x$ , giving the values of the constants $k$ and $b$ to 3 significant figures.

A telecommunications engineer is modeling the signal strength, $S$ microvolts, of a transmitter at a distance $x$ km. A plot of $log_{10} S$ against $x$ produces a straight line $l$ .

The line $l$ passes through the points $(0, 3.42)$ and $(12, 1.02)$ .

Write down an equation for $l$ .

Hence, or otherwise, express $S$ in the form $kb^x$ , giving the values of the constants $k$ and $b$ to 3 significant figures.

2 Unit AS 2: Applied Mathematics

Question 271

Markscheme

2 Unit AS 2: Applied Mathematics

Question 271

Markscheme

2 Unit AS 2: Applied Mathematics

Question 271

2 Unit AS 2: Applied Mathematics Questions

2 Unit AS 2: Applied Mathematics

Question 271

2 Unit AS 2: Applied Mathematics Questions