Write the equation of the indicated line. Write the equation in slope-intercept form.The line perpendicular to y = 
x + 5 that passes through (4, 4)
A. y = 6x - 28
B. y = - 
x - 
C. y = - 6x + 28
D. y = - 6x - 28
Answer: C
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Determine whether the functions f and g are inverses of each other.f(x) = x3 + 2; g(x) = 
- 2
A. Yes B. No
Solve the system.
A. x = -2, y = -1, z = 9 B. x = 2, y = -1, z = -9 C. x = 2, y = -1, z = 9 D. x = -2, y = -1, z = -9
Solve the problem.A ball is thrown vertically upward with an initial velocity of 160 feet per second. The distance in feet of the ball from the ground after t seconds is 
For what intervals of time is the ball less than 384 above the ground (after it is tossed until it returns to the ground)?
A. between 0 and 3.5 seconds and between 6.5 and 10 seconds B. between 4 and 6 seconds C. between 0 and 4 seconds and between 6 and 10 seconds D. between 0 and 4.5 seconds and between 5.5 and 10 seconds
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 hydrogen ion concentration if the 
A. 3.98 x 10-9 B. 2.51 x 10-10 C. 2.51 x 10-9 D. 3.98 x 10-10