Solve the problem.The pH of a chemical solution is given by the formula pH = -log10[H+], where [H+] is the concentration of hydrogen ions in moles per liter. Find the pH if [H+] = 4.4 × 10-6. Round to the nearest hundredth.
A. 6.64
B. 5.36
C. 5.64
D. 6.36
Answer: B
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. -14 B. -5 C. 0 D. 1
Factor by grouping.6x2 - 5xt - 4t2
A. (6x + t)(x - 4t) B. (2x + t)(3x - 4t) C. (2x - t)(3x + 4t) D. Prime
Find the slope of the line that passes through the given points.(-5, -12) and (3, 1)
A. 
B. - 
C. 
D. 
Solve the problem.The function f(x) = 1 + 1.5 ln (x + 1) models the average number of free-throws a basketball player can make consecutively during practice as a function of time, where x is the number of consecutive days the basketball player has practiced for two hours. After how many days of practice can the basketball player make an average of 6 consecutive free throws?
A. 29 days B. 107 days C. 105 days D. 27 days