Matrices C and D are shown below. What values of a and b will make the equation CD = I true?





What are the values of x and y in the matrix subtraction below?





In the diagram below, = . What is the value of m?





Which graph represents the function ?





What are the solutions of the equation 9x4 – 2x2 – 7 = 0? Use u substitution to solve.




What is the completely factored form of 8x2 – 50?
What must be a factor of the polynomial function f(x) graphed on the coordinate plane below?

A diagonal matrix has the elements shown below.Which is the diagonal matrix containing these elements?





The depth of the water, d, at the end of a pier changes periodically as a function of time, t, in hours as shown in the graph below. According to the model, the last low tide occurred at 5:00 a.m. When will the next low tide occur? Let t = 0 be 12:00 a.m.

Which system is equivalent to ?





If and , what is X when ?





Which expression is equivalent to –8?


If , then what is ?





The constraints of a problem are listed below. What are the vertices of the feasible region?

What is the value of given the diagram below?





The polynomial function f(x) is a fourth degree polynomial. Which of the following could be the complete list of the roots of f(x)?

One root of is x = –10. What are all the roots of the function? Use the Remainder Theorem.

Based on the type of equations in the system, what is the greatest possible number of solutions?

What is the equation of the graph below?



What is the product of ?



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