A certain type of battery cost $1.50, and another battery cost $4.00. A recent shipment contained 2200 batteries, and the bill totaled $5050. How many of the cheaper batteries were in the shipment?
What will be an ideal response?
1500
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Find the standard deviation s for the given data. Round your answer to one more decimal place than the original data.The manager of a bank recorded the amount of time each customer spent waiting in line during peak business hours one Monday. The frequency distribution below summarizes the results. Find the standard deviation. Round your answer to one decimal place. 
A. 5.4 B. 5.7 C. 7.0 D. 5.2
Solve using the addition principle. Then graph.f - 4 < -12
A. f < -8
B. f ? -8
C. f ? -8
D. f > -8
multiple-choice test offers five possible answers for every question, of which only one is the correct answer. A student guesses on six of the questions. What is the probability that she gets exactly three of the guessed questions correct?
What will be an ideal response?
Solve. Simplify the answer.Chris rode her bicycle 11
miles on Tuesday. On Thursday, she rode 
miles. What was her total biking distance for those two days?
A. 17
miles
B. 11
miles
C. 19
miles
D. 18
miles