Find an equation for the line. Then write your answer in the form 
Through (5, -4) and (-2, -8)
A. y = - 
x - 
; 4x + 7y + 48 = 0
B. y = - 
x - 5; 9x + 6y + 30 = 0
C. y = 
x - 5; 9x - 6y - 30 = 0
D. y = 
x - 
; 4x - 7y - 48 = 0
Answer: D
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Provide an appropriate response.Which formula is not equivalent to the other two? I.
II.
III.
A. II B. All are equivalent. C. I D. III
Solve.In chemistry, the pH of a substance is defined by 
where 
is the hydrogen ion concentration in moles per liter. Find the 
of a sample of lake water whose 
is 
moles per liter. (Round to the nearest tenth.)
A. 6.4 B. 7.3 C. 10.1 D. 8.5
Write the first n terms of the given arithmetic sequence (the value of n is indicated in the question).a1 = 2 - 
, a2 = 2, n = 4
A. 2 - 
, 3 - 
,4 - 
, 5 - 
B. 2 - 
, 2, 2 + 
, 2 + 2
C. 0, 0 - 
, 3 - 3
, 4 - 4
D. 0, 2 - 
, 2, 2 + 
Use the LCD to simplify and solve.
f - 5 = 1
A. 20 B. -20 C. -30 D. 30