18. 45% of the students at River
Middle School walk to school. If
234 students walk to school, how
many students are at River Middle
School altogether?

Step-by-step explanation:

From the above question, 45% of students walk to school and the 45% in number is 234.

Total number of students will be:

45% = 234

100% = ×

Therefore 100% x 234 = 45%x

Convert the % to numbers by dividing through by 100

= 1 x 234= 0.45x

= 234/0.45 = x

=520 = x

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: