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Questions in Grade Middle-school

[Answered] If \(9(x - 9) = -11\), then \(x = ?\) A. \(-\frac{92}{9}\) B. \(-\frac{20}{9}\) C. \(-\frac{11}{9}\) D. \(-\frac{2}{9}\) E. \(\frac{70}{9}\)

[Answered] Marlon is bowling in a tournament and has the highest average after 5 games, with scores of 210, 225, 254, 231, and 280. In order to maintain this exact average, what must be Marlon’s score for his 6th game? F. 200 G. 210 H. 231 J. 240 K. 245

[Answered] The weekly fee for staying at the Pleasant Lake Campground is $20 per vehicle and $10 per person. Last year, weekly fees were paid for \( v \) vehicles and \( p \) persons. Which of the following expressions gives the total amount, in dollars, collected for weekly fees last year? A. \( 20v + 10p \) B. \( 20p + 10v \) C. \( 10(v + p) \) D. \( 30(v + p) \) E. \( 10(v + p) + 20p \)

[Answered] Solve for \( b \): \[ 4b \times 3b - 2b = 102 \]

[Answered] In a group of 10 students, 7 are 13 years old, and 3 are 17 years old. What is the average (arithmetic mean) age of these 10 students?

[Answered] What is the greatest common factor of 42, 126, and 210? F. 2 G. 6 H. 14 J. 21 K. 42

[Answered] A boat departs Port Isabelle, Texas, traveling to an oil rig. The oil rig is located 9 miles east and 12 miles north of the boat’s departure point. About how many miles is the oil rig from the departure point? A. 3 B. \(\sqrt{63}\) C. 15 D. 21 E. 225

[Answered] Which of the following statements must be true whenever \( n \), \( a \), \( b \), and \( c \) are positive integers such that \( n < a \), \( c > a \), and \( b > c \)? A. \( a < n \) B. \( b - n > a - n \) C. \( b < n \) D. \( n + b = a + c \) E. \( 2n > a + b \)

[Answered] 3 is 0.2 percent of what number?

[Answered] Which of the following is an equation of the circle with its center at (0,0) that passes through (3,4) in the standard (x,y) coordinate plane? A. \( x - y = 1 \) B. \( x + y = 25 \) C. \( x^2 + y = 25 \) D. \( x^2 + y^2 = 5 \) E. \( x^2 + y^2 = 25 \)