EM-646

Exponential graphs

E Math · Secondary 3 · Hard · Exponential graphs

Solve the equation

3^{x} = 2x + 1

using the graphical method idea: the line

y = 2x + 1

intersects the curve

y = 3^{x}

at two points. One solution is

x = 0

. The other solution is closest to which value?

$1$
$1.5$
$2$
$-1$

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