Soft drinks have carbonic acid and a hydrogen ion concentration of 0.001. What is the pH of a soft drink?
A. 3.0
B. 1.00
C. 0.001
D. 7.0
Answer: A
Mathematics
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Write the rational expression in simplest form.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Solve the problem.For what value of r does the infinite series 1 + 5r + 3r2 + 5r3 + r4 + 5r5 + 3r6 + 5r7 + r8 + ... converge?
A. |r| < 4
B. |r| < 1
C. |r| < 
D. |r| < 
Mathematics
Write the number in expanded form.70,500
A. 7,500,000 B. 70,000 + 5000 C. 70,000 + 500 D. 7000 + 500
Mathematics
Solve the problem. Express the answer in scientific notation to two decimals.The earth is approximately 92,900,000 miles from the sun. If 
what is the distance to the sun in meters?
A. 5.7 × 1010 m B. 1.50 × 1011 m C. 5.7 × 10-10 m D. 1.50 × 1010 m
Mathematics