hasschmitzz34
contestada

solve these 3 questions
1: 19−4c=17

2: 1.1x+1.2x−5.4=−10

3:The cost C (in dollars) of making n watches is represented by C=15n+85. How many watches are made when the cost is $385?

Respuesta :

Answer:

1.

[tex]19 - 4c = 17 \\ 4c = 19 - 17 \\ 4c = 2 \\ \\ { \underline{c = \frac{1}{2} }}[/tex]

2.

[tex]1.1x + 1.2x - 5.4 = - 10 \\ \\ 2.3x = - 4.6 \\ { \underline{ \: \: x = - 2 \: \: }}[/tex]

3.

[tex]c = 15n + 85 \\ 385 = 15n + 85 \\ 15n = 300 \\ { \underline{ \: \: n = 20 \: \: }}[/tex]

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