Which difference is about 10?
a. 33.2-28.4
b. 70.9-58.7
c. 42.5-16.8
d. 65.7-65.6

D. 65.7-65.6

(the exact difference is 10.1, which is "about" 10)

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: