Posted by **Kayla** on Monday, October 7, 2013 at 8:16pm.

You practice playing your guitar every day. You spend 15 minutes practicing chords and the rest of the time practicing a new song. So the total number of minutes y you practice for the week is given by y=7(15+x), where x is the number of minutes you spend on practicing a new song.

a. Solve the equation for x.

b. How many minutes did you spend on a new song if you practiced 210 minutes last week? 245 minutes? 315 minutes?

is a: x=1/7y-15

- ALGEBRA 1 -
**answerhalp**, Monday, October 7, 2013 at 9:45pm
a. y = 7(15 + x)

y = 105 + 7x

y - 105 = 7x

1/7y - 105/7 = x

X DOES NOT EQUAL 1/7y - 15. You didn't distribute the 7 to 15. Remember to distribute to all on the equation, not just the x!

b. 210 = 105 + 7x

105 = 7x

x = 105/7 = 15 minutes practicing new song

- ALGEBRA 1 -
**answerhalp**, Monday, October 7, 2013 at 9:48pm
sorry. x does equal 1/7y - 15. but if you only spend 210 minutes practicing that one week, it is impossible for you to practice 245 or 315 minutes on the new song.

- ALGEBRA 1 -
**AnswerBuddy:)**, Monday, September 12, 2016 at 8:12pm
A: Solve for the equation for X.

Y=7(15+X)

Y=105+7X

Y-105=7X

Y/7-15=X or 1/7 Y-15=X

B: Plug in the number Y as 210, 245, 315

210=7(15+X)

210=105+7X

105=7X

15=X

[That was the example for if you practiced 210 minutes last week.]

- ALGEBRA 1 -
**AnswerBuddy:)**, Monday, September 12, 2016 at 8:17pm
245:

245=105+7X

140=7X

20=X

315:

315=105+7X

210=7X

30=X

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