13. COINS Declan has 17 coins in his pocket. All the coins are dimes and quarters. The value of the coins is 290 cents. Define variables and write a system of equations to find the number of dimes and quarters Declan has. Then solve the system graphically.

answerthe vertex form

step-by-step explanation:

whats the

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.

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y

=

−

2

find the upper bound of the range.

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y

=

0

the range is  

y

≤

−

2

or  

y

≥

0

.

(

−

∞

,

−

2

]

∪

[

0

,

∞

)

{

y

|

y

≤

−

2

,

y

≥

0

}

step-by-step explanation: