Write an equivalent expression. Use a commutative law.y + 13
A. 13 + y
B. y13
C. 13y
D. 13(y + 1)
Answer: A
Mathematics
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Solve the problem.A 20-kg mass is attached to a spring that hangs vertically and is stretched 3 m from the equilibrium position of the spring. Assume a linear spring with F(x) = kx. How much work is required to compress the spring and lift the mass 1.5 m? Round to four decimal places when appropriate.
A. 24.5 J B. 318.5 J C. 220.5 J D. 514.5 J
Mathematics
Find the indicated term for the arithmetic sequence with the first term a1 and the common difference d. Find a31 when a1 = -4, d = 
A. - 
B. - 24
C. 16
D. 
Mathematics
Write interval notation for the graph.
A. (x + h, x) B. (x , ?) C. (x , x + h) D. ( -?, x + h)
Mathematics
Write interval notation for the graph.
A. ( -?, q) B. (q, ?) C. [q, ?) D. (-? , q]
Mathematics