Factor the four-term polynomial by grouping.xy + 10x - 5y - 50
A. (y - 10)(x + 5)
B. (x + 10)(y - 5)
C. (y + 10)(x - 5)
D. (x - 10)(y + 5)
Answer: C
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Decide what number must be added to the binomial to make a perfect square trinomial.x2 - 
x
A. - 
B. 
C. - 
D. 
Solve the problem.The position(in feet) of an object oscillating up and down at the end of a spring is given by 
at time t (in seconds). The value of A is the amplitude of the motion, k is a measure of the stiffness of the spring, and m is the mass of the object. Find the object's velocity at time t.
A. v = A
cos 
ft/sec
B. v = - A
cos 
ft/sec
C. v = A
cos 
ft/sec
D. v = A cos 
ft/sec
Given the current cost of an item and the inflation rate, find the cost of the item in the specified number of years.Milk: $2.91, inflation rate: 3%, after 4 years
A. $6.28 B. $5.28 C. $3.28 D. $4.28
Determine whether the system of equations is consistent with independent equations, consistent with dependent equations, or inconsistent.
A. Inconsistent B. Consistent with independent equations C. Consistent with dependent equations