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Which of the following is the independent variable in the equation below? y(x)=7+8x 

A. y

B. 7

C. x

D. 8

Answer Explanation:

Therefore, the Correct Answer is C.

More Questions on TEAS 7 Math

  • Q #1: A pharmaceutical company’s stock price was $20.33 on Monday. On Tuesday, the price went up $0.35. On Wednesday, the price decreased from Tuesday’s price by $1.05. On Thursday, the price went up $0.95 from Wednesday’s price. Which of the following was the final price on Thursday?

    A. $20.68

    B. $19.63

    C. $20.63

    D. $20.58

    Answer Explanation

    Thursday’s stock price is found by determining the price of the stock on Tuesday and Wednesday.

    Stock price on Monday= $20.33

    Stock price on Tuesday= $(20.33+0.35)=$20.68

    Stock price on Wednesday =$(20.68-1.05)=$19.63

    Stock price on Thursday = $(19.63+0.95)=$20.58

    Therefore, the price of the stock on Thursday was $20.58

  • Q #2: Soft Drinks: Orange Two 24-packs for $20, One 24-pack for $15 Root Beer: One 24-pack for $18 Cream Soda: One 12-pack for $10 A consumer needs to purchase at least 60 soft drinks for a picnic. Which of the following combinations is the most cost-effective?

    A. 5 packs of cream Soda

    B. 3 packs of Orange

    C. 2 packs of Root Beer and 1 pack of Cream Soda

    D. 2 packs of Orange and 1 pack of Cream Soda

    Answer Explanation

    To find the cheapest option, we find the amount the consume will spend for each option given:

    2 packs of Orange and 1 pack of Cream Soda will cost $20 + $10= $30 (Choice D)

    3 Packs of Orange will cost $20+$15 = $35 (Choice B)

    2 packs of Root Beer and 1 pack of Cream Soda will cost 2($18) + $10 = $46 (Choice C)

    5 packs of cream Soda will cost 5($10)=$50 (Choice A)

    Hence Choice D - 2 packs of Orange and 1 pack of Cream Soda is the correct answer.

  • Q #3: The length of a rectangular room is 2 feet greater than its width. Which of the following equations represents the area (A) of the room?

    A. A=x(x+2)

    B. A=2x+2(x+2)

    C. A=2x(x+2)

    D. A=2x

    Answer Explanation