Solve. Round to the nearest tenth if necessary.Find the amount of decrease and the percent decrease when the original amount is 154 and the new amount is 43.
A. 111; 258.1%
B. 43; 16.2%
C. 111; 72.1%
D. 43; 27.9%
Answer: C
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Solve. The polynomial 8x3 + 24x2 - 320x represents the volume of a rectangular solid. Factor the polynomial.
A. 8x(x - 8)(x - 5) B. 8x(x + 8)(x + 5) C. 8x(x - 8)(x + 5) D. 8x(x + 8)(x - 5)
Solve the problem.The lengths of the sides of a triangle are given by x, x + 4, and x + 8. Find the length of each side if the perimeter is 36 cm.
A. 8 cm, 12 cm, 16 cm B. 9 cm, 13 cm, 17 cm C. 24 cm, 28 cm, 32 cm D. 8 cm, 8 cm, 20 cm
Solve.A board of length 
inches was cut into two pieces. If one piece is 
inches, express the length of the other board as a rational expression.
A. 
in.
B. 
in.
C. 
in.
D. 
in.
Solve the problem.Richard's team wants to plant 1,112 trees in 8 months. How many trees per month do they need to plant?
A. 149 trees B. 278 trees C. 139 trees D. 147 trees