Solve the problem.The rate of water usage for a business, in gallons per hour, is given by 
where t is the number of hours since midnight. Find the average rate of water usage over the interval 
A. 2.63 gallons per hour
B. 2.71 gallons per hour
C. 2.62 gallons per hour
D. 0.05 gallons per hour
Answer: C
Mathematics
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Choose the best answer.The amount of milk in a carton
A. 2.2 m3 B. 2.2 mL C. 2.2 L D. 2.2 cm3
Mathematics
Simplify.
A. b3
B. 
C. 
D. b11
Mathematics
Solve the problem.A couple with a monthly income of $1700 spends 89% of its earnings and saves the balance. Find (i) the monthly savings and (ii) the annual savings of this couple.
A. (i) $187; (ii) $1870 B. (i) $1513; (ii) $15,130 C. (i) $1513; (ii) $18,156 D. (i) $187; (ii) $2244
Mathematics
Multiply or divide as indicated.
? 
÷ 
A. 
B. 
C. 
D. 
Mathematics