Solve the problem.Suppose assembly line workers are paid as follows:1-75 items assembled$1.00 each76-125 items assembled$1.75 each126 or more items assembled$2.25 eachIf Jared assembles 80 items, what are his gross earnings?
A. $80.00
B. $140.00
C. $83.75
D. $86.25
Answer: C
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Solve the problem.A certain company has found that its expenditure rate per day (in hundreds of dollars) on a certain type of job is given by 
where x is the number of days since the start of the job. Find the expenditure if the job takes 8 days.
A. $448 B. $10,400 C. $104 D. $44,800
Solve.The speed of a stream is 4 mph. If a boat travels 78 miles downstream in the same time that it takes to travel 39 miles upstream, what is the speed of the boat in still water?
A. 12 mph B. 8 mph C. 14 mph D. 15 mph
Solve the problem. Express the answer in scientific notation to two decimals.A company produced 2,290,000 small appliances in one year and made a profit of $6,810,000. What was the profit on each appliance?
A. $29.70 B. $2.97 C. $2.97 × 103 D. $2.97 × 106
Multiply.
A. 121 - 
z - 
z2
B. 121 + 
z - 
z2
C. 121 - 
z2
D. 121 - 
z2