Solve the problem.The pH of a solution ranges from 0 to 14. An acid has a pH less than 7. Pure water is neutral and has a pH of 7. The pH of a solution is given by 
where x represents the concentration of the hydrogen ions in the solution in moles per liter. Find the pH if the hydrogen ion concentration is 
A. -10
B. 4
C. -4
D. 10
Answer: B
Mathematics
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Write the expression as a Hindu-Arabic numeral.7(101) + 8(100)
A. 870 B. 87 C. 78 D. 780
Mathematics
Factor completely. If the polynomial is prime, state so.48x3 - 32x5 - 18x
A. prime B. 2x(4x2 + 3)(4x2 - 3) C. -2x(4x2 + 3)2 D. -2x(4x2 - 3)2
Mathematics
Find the decimal equivalent of the fraction.
A. 0.
B. 0.4
C. 0.
D. 0.45
Mathematics
You want to retire at age 65. You decide to make a deposit to yourself at the end of each year into an account paying 11%, compounded annually. Assuming you are now 29 and can spare $1,600 per year, how much will you have when you retire at age 65? ? Please round the answer to the nearest cent. ? $ __________
Fill in the blank(s) with the appropriate word(s).
Mathematics