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Ad libitum [116K]

1 year ago

6

For the real-valued functions f(x)=2x+3 and g(x)=√x-5, find the composition fog and specify its domain using interval notation.

1 answer:

Burka [1]1 year ago

7 0

Find fog

fog(x)
f(g(x))
f(√x-5)
2√(x-5)+3

For real range the domain

x-5≥0
x≥5

Domain is [5,oo)

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The number of seats in a row has been increased at a rectangular-shape movie theater after renovation so that it is now five mor

Damm [24]

Let the number of rows be = r

Let the number of seats per row be = s

we know that the number of seats is 126.

So, $s\times r=126$ ..... (1)

As given, there are five more seats per row than the number of rows, so we can say that:

$s=r+5$

Putting this in equation (1)

$(r+5)*r=126$

$r^{2}+5r=126$

$r^{2}+5r-126=0$

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