Translate the percent problem to a proportion using x for the unknown value. Do not solve the proportion.40 is 98% of what?
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Answer: D
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Solve the problem.Find the moment of inertia about the x-axis of a thin plane of constant density 
bounded by the coordinate axes and the line 
.
A. 252
B. 294
C. 
D. 343
Multiply the polynomials using the FOIL method. Express the answer as a single polynomial in standard form.(5x - 12)(3x - 6)
A. 8x2 - 66x - 66 B. 15x2 - 66x + 72 C. 8x2 - 66x + 72 D. 15x2 - 66x - 66
Add the real numbers. Write any improper fraction as a whole or mixed number where appropriate.- 
+ 
A. 1
B. 
C. - 
D. - 1
Solve the problem.The hydrogen ion concentration [H+] of a cleaning solution is 5.3 × 10-11 moles per liter. Find the pH value of the solution to the nearest tenth. Is the cleaning solution acidic or basic?
A. pH ? 12.7, basic B. pH ? 3.3, basic C. pH ? 5.8, acidic D. pH ? 10.3, basic