Choose the algebraic expression that best represents the following situation: Jeral's test score (J) was 5 points higher than half of Kara's test score (K).
A. K = 1/2 × J - 5
B. J = 1/2 × K + 5
C. J = 2K - 5
D. K = (J - 1/2) - 5
Convert 250 centimeters to kilometers.
A. 0.0025 km
B. 0.025 km
C. 0.250 km
D. 2.50 km
The price of a pencil box increased from $25 to $26.50. What is the percentage increase in the price?
A. 6%
B. 35%
C. 60%
D. 0.6%
Sam, Paul, and Dean share a sum of money in the ratio 14:16:18 respectively. Given that Sam receives $2100, how much does Dean receive?
A. $2400
B. $2000
C. $2700
D. $5100
Which answer choice most accurately describes the distribution observed in the graph?
A. normal
B. plateau
C. skewed left
D. bimodal
Three numbers x, y, and 27 have a mean of 30. Five numbers x, y, 27, a, and b have a mean of 45. What is the mean of a and b?
A. 69
B. 70
C. 67.5
D. 25
What is the median for this set of numbers? 9, 1, 4, 8, 7, 8, 4, 2, 10, 9, 4
A. 6
B. 10
C. 7
D. 8