An auditorium has 20 seats on the first row, 24 on the second row, 28 on the third row, and so on and has 30 rows of seats. How many seats are in the 30th row?

136

Step-by-step explanation:

it adds for every time.

find the magnitude of the trig term  

csc

(

x

)

−

1

by taking the absolute value of the coefficient.

1

find the lower bound of the range.

tap for more

y

=

−

2

find the upper bound of the range.

tap for more

y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation:

pls refer ro the top for answer