15 decreased by twice a number algebraic expression?

Mathematics

2 answers:

Reil [10]3 years ago

5 0

$x-\ number\\\\twice\ a\ number:\\2x \\\\ Write\ it\ as\ a \ function: \\y=15-2x$

labwork [276]3 years ago

4 0

15-2x
A number is a variable so use a letter like x for them

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konstantin123 [22]

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In 2005, the shabelle river in Somalia rose an estimated 5.25 inches every hour for 15 hours. The increase in water level is rep

Georgia [21]

Answer:

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This is equation of straight line passing through the origin.

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As x> 0, so Range is those values of y for which x is defined.

$x= \frac{y}{5.25}$ ,So Range is y>0 i.e (0,∞}

As the function has no breaking point , that is when you plot the graph on coordinate axis there is no breaking point.So , it is everywhere continuous i. e for all values of x.