Factor the polynomial by removing any common monomial factor.3x2 + 15x
A. 3(x2 + 5x)
B. 3x(x + 5)
C. x(3x + 15)
D. 3x(x + 5x)
Answer: B
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A solution is an acid if its pH is less than 7 and a base if its pH is greater than 7. The pH is defined by 
where [H+] is the concentration of hydrogen ions in the solution. Use this information to answer the question.The concentration of hydrogen ions in a solution is approximately 10-7.6. What is the pH of the solution? Is the solution an acid or a base?
A. The pH is 7.6. The solution is an acid. B. The pH is -7.6. The solution is a base. C. The pH is -7.6. The solution is an acid. D. The pH is 7.6. The solution is a base.
Graph the function.f(x) = ex + 2
A. 
B. 
C. 
D. 
Find the vertices and foci of the given ellipse.4x2 + y2 = 4
A. Vertices: (2, 0) and (-2, 0);
Foci: (
, 0) and (-
, 0)
B. Vertices: (0, 2) and (0, -2);
Foci: (0, 
) and (0, -
)
C. Vertices: (0, 2) and (0, -2);
Foci: (0, 
) and (0, -
)
D. Vertices: (0, 
) and (0, -
);
Foci: (0, 2) and (0, -2)
Solve the problem.A moving firm charges a flat fee of $40 plus $35 per hour. Let y be the cost in dollars of using the moving firm for x hours. Find the slope-intercept form of the equation.
A. y = 35x - 40 B. y = 40x - 35 C. y = 35x + 40 D. y = 40x + 35