Use the empirical probability formula to solve the exercise.Two coins are tossed 20 times and the number of tails is observed.
What is the probability that exactly one tail occurred?
A. 
B. 
C. 
D. 1
Answer: C
Mathematics
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Find the limit.
A. 
B. 143
C. 
D. No limit
Mathematics
Solve.The graph shows the total cost y (in dollars) of owning and operating a minivan where x is the number of miles driven. Find the slope of the line and write the slope as a rate of change.
A. $0.43 per mile B. $30.00 per mile C. $2.33 per mile D. cannot be determined
Mathematics
Substitute to find the value of the expression.In one store, bananas cost 60 cents per pound. The cost, in dollars, of x pounds of bananas is 0.6x. What is the cost of 1.8 pounds of bananas?
A. $1.28 B. $3.00 C. $0.30 D. $1.08
Mathematics
Simplify. Combine like terms if possible.-3n - (-n)
A. -2n2 B. -3n2 C. -4n D. -2n
Mathematics