Solve the equation. Use words or set notation to identify equations that have no solution, or equations that are true for all real numbers. 7(x + 3) = 7x + 21
A. {x|x is a real number}
B. {42}
C. ?
D. {0}
Answer: A
You might also like to view...
Plot the parametric surface over the indicated domain.r(u, v) = 4ui + 6vj + (u2 + v2)k; -2 ? u ? 2, -4 ? v ? 4
A. 
B. 
C. 
D. 
Determine whether the algebraic expression is a polynomial (Yes or No). If it is a polynomial, write the polynomial in standard form, determine the degree and state if it is a monomial, binomial, or trinomial. If it is a polynomial with more than 3 terms, identify the expression as a polynomial.3x-4 - 6x + 2
A. yes; 3x-4 - 6x + 2; degree -4; trinomial B. yes; 3x-4 - 6x + 2; degree 2; polynomial C. yes; 3x-4 - 6x + 2; degree 3; binomial D. no
Find the zeros for the polynomial function and give the multiplicity for each zero. State whether the graph crosses the x-axis or touches the x-axis and turns around, at each zero.f(x) = x3 + 8x2 - x - 8
A. -1, multiplicity 1, crosses the x-axis; 1, multiplicity 1, crosses the x-axis; - 8, multiplicity 1, crosses the x-axis. B. -1, multiplicity 1, touches the x-axis and turns around; 1, multiplicity 1, touches the x-axis and turns around; - 8, multiplicity 1, touches the x-axis and turns around C. 8, multiplicity 1, crosses the x-axis; 1, multiplicity 1, crosses the x-axis; - 8, multiplicity 1, crosses the x-axis. D. 1, multiplicity 2, touches the x-axis and turns around; - 8, multiplicity 1, crosses the x-axis.
Solve the problem.The number of mosquitoes M(x), in millions, in a certain area depends on the June rainfall x, in inches: 
What rainfall produces the maximum number of mosquitoes?
A. 36 in. B. 3 in. C. 6 in. D. 0 in.