Linear Formative Assessment

What value of r makes  $\frac{2r+3}{5}=\frac{4r-3}{7}$  true?

• -2

• -1

• 2

• 6

What is the solution to the inequality -31 > 6x + 11

• x > -10/3

• x < -10/3

• x > -7

• x < -7

A stamp dealer sells rare stamps for an average price of $50 each at the convention. The set-up fees and travel to the next convention will cost him $250. If he wants to make at least $2000 profit at the convention, the inequality

50n -250 ≥ 2000 can be used to determine n, the number of stamps he must sell. Which graph represents the number of stamps the dealer must sell to make a profit of at least $2000?

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Which values of x in the set { -5, 0, 8, 9, 10, 14 } are solutions to the inequality 2(x-4) < 10 ?

• {10, 14}

• {9, 10, 14}

• {-5, 0, 8}

• { -5, 0, 8, 9 }

If 2(x + 3) = 20, then x=

• 6

• 7

• 14

• 15

Which of the following graphs represents the solution set for the inequality -x < 2?

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Which inequality is equivalent to  $20\left(x-1\right)-3x\le50x-30+5x?$  

• 17x - 1 ≤ 45x - 30

• 17x - 1 ≤ 55x - 30

• 17x - 20 ≤ 45x - 30

• 17x - 20 ≤ 55x - 30

On a hike, Maria walked up a hill in 30 minutes and then she ran back down the hill in 10 minutes. Which of the following graphs could model the total distance Maria hiked?

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The graph below shows the speed of a car that is driven through a town and then on a major highway. During which of the following time intervals was the car stopped at a traffic light?

• between 0 and 1 minute

• between 1 and 2 minutes

• between 2 and 3 minutes

• between 3 and 4 minutes

The points on the graph below show the total cost for different numbers of tickets to a concert. As shown, 1 ticket costs $20, 2 tickets cost $40, 3 tickets cost $60, and 4 tickets cost $80. What is the slope of the line?

• 1/20

• 1/2

• 2

• 20