Translate the sentence to an equation using x as the variable. Do not solve the equation.The product of negative three and a number is twenty-four.
A. -3 + x = 24
B. -3x = 24
C. -8x = 3
D. x ÷ (-3) = 24
Answer: B
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Solve the problem.A spring on a horizontal surface can be stretched and held 0.5 m from its equilibrium position with a force of 40 N. How much work is done in stretching the spring 2 m from its equilibrium position?
A. 80 J B. 160 J C. 40 J D. 320 J
Perform the indicated computation. Write the answer in scientific notation.(4 × 10-3)(1.5 × 10-1)
A. 6 × 103 B. 6 × 10-3 C. 6 × 10-4 D. 60 × 10-4
Find all numbers u (if any) so that the given point (u, y) or (x, u) is on the unit circle.
A. ± 
B. ± 
C. ± 
D. ± 
Solve the problem.The area of a rectangular wall in a classroom is 225 square feet. Its length is 2 feet shorter than three times its width. Find the length and width of the wall of the classroom.
A. width = 9 ft; length = 25 ft B. width = 9 ft; length = 11 ft C. width = 9 ft; length = 29 ft D. width = 9 ft; length = 15 ft