Factor the trinomial completely.5x3 + 10x2 - 40x
A. (5x2 + 10x)(x - 4)
B. 5x(x + 2)(x - 4)
C. Prime
D. 5x(x - 2)(x + 4)
Answer: D
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Solve.Regrind, Inc. regrinds used typewriter platens. The variable cost per platen is $1.70. The total cost to regrind 100 platens is $400. Find the linear cost function to regrind platens. If reground platens sell for $10.90 each, how many must be reground and sold to break even?
A. C(x) = 1.70x + 230; 19 platens B. C(x) = 1.70x + 400; 44 platens C. C(x) = 1.70x + 230; 25 platens D. C(x) = 1.70x + 400; 32 platens
Find the exact length of the missing side of a right triangle with sides a, b, and c, where c is the hypotenuse.b = 
, c = 
A. 17
B. 
C. 3
D. 
Write the whole number in standard form.Three thousand, nine hundred forty-eight
A. 30,948 B. 3048 C. 3948 D. 300,948
Solve the system by the method of substitution.
A. 
B. 
C. 
D. 
E. no solution exists