Wednesday

August 27, 2014

August 27, 2014

Posted by **Gabby** on Monday, September 23, 2013 at 10:44pm.

(4,1)***

(2,5)

(4,3)

(0,-3)

2) Which equation represents the pattern in the table below?

(Sals and Carrie’s Ages)

Sal 3 5 8 13 15

Carrie 7 9 12 17 19

S=c+4***

S=4c

C=s+4

C+4s

3) Solve. 1/3x=12

X=4

X=15

X=36***

X=39

4) 3/2x-4=16

X=20

X=13 1/3

X= 15 1/3***

30

5) Use the given equation to find the solution to the following problem.

The equation 9.95 + 0.30s=c gives the cost c in dollars that a website charges for downloading songs. The variable s stands for the number of songs downloaded. Find the cost of downloading 35 songs.

C=$9.95

C=$20.45***

C=$144.45

6) Write an equation and solve to find the solution to the following problem.

You have $27 to spend at the mall and a coupon for $6 off at your favorite store. A t-shirt costs $11. How many t-shirts can you buy using your coupon and money?

1 shirts

2 shirts

3 shirts***

4 shirts

Am I right???

- Solving two step equations -
**Gabby**, Monday, September 23, 2013 at 10:51pmThis is rather urgent now...

- Solving two step equations -
**Reiny**, Monday, September 23, 2013 at 11:52pm#1, nope

try (2,5) in y = 3x-1

LS = 5

RS = 3(2)-1 = 6-1 = 5 = LS

so it is (2,5) not the one you picked

#2 looks like we have to add 4 to Sally's age to get Carries

so C = S+4

#3, correct

#4

(3/2)x - 4 = 16

(3/2)x = 20

3x = 40

x = 40/3 = 13 1/3

#5 correct

#6 correct, if you ignore sales tax

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