Solve the problem. Round your answer to the nearest tenth, when appropriate. Use the formula 
, as needed.Find the pH if [H3O+] = 7.9 × 10-3.
A. 2.9
B. 3.1
C. 2.1
D. 3.9
Answer: C
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Find the indicated measure of central tendency.A class of 44 students took a 10-point quiz. The frequency of scores is given in the table. Find the mean score.
A. 7.5 B. 7.3 C. 7.6 D. 7.8
Find the quotient and write in rectangular form. First convert the numerator and denominator to trigonometric form.
A. - 
+ 
i
B. -10 + 10
i
C. - 
+ 
i
D. -2 + 2
i
Find the point-slope form of the equation of the line satisfying the given conditions and use this to write the slope-intercept form of the equation.x-intercept = -5 and y-intercept = 1
A. y = 
x + 2
B. y = 
x + 1
C. y = 5x + 1
D. y = - 
x + 1
Complete the table of values. Write the results as ordered pairs.2x + y = -2
A. (-3, 4); (0, -10); (1, -4) B. (-3, 4); (0, 0); (1, -4) C. (-3, 4); (0, -2); (1, -4) D. (-3, -3); (0, -2); (1, -4)