Use the five-step strategy for solving word problems to find the number or numbers described in the following exercise.When a number is decreased by 20% of itself, the result is 144. What is the number?
A. 11
B. 36
C. 900
D. 180
Answer: D
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An electronics company has strict specifications for silicon chips used in computers. The company will only install chips that are within 0.05 centimeters of the specified thickness. If the thickness specification of the chip type is 0.641 cm, find the lower and upper limit for the acceptable range of thickness of the chips.
A. The lower limit is 0.591 cm and the upper is 0.691 cm. B. The lower limit is 0.601 cm and the upper is 0.69 cm. C. The lower limit is 0.692 cm and the upper is 0.69 cm. D. The lower limit is 0.591 cm and the upper is 0.701 cm. E. The lower limit is 0.592 cm and the upper is 0.691 cm.
Graph the function.f(x) = x4 - 3x3 + 2x2
A. 
B. 
C. 
D. 
Solve. Round to the nearest whole if necessary.An inspector found 36 defective radios during an inspection. If this is 0.03% of the total number of radios inspected, how many radios were inspected?
A. 120,000 radios B. 3600 radios C. 1200 radios D. 12,000 radios
Find the slope and the y-intercept of the given line.7x + 9y = 73
A. 
; 
B. - 
; 
C. 
; 
D. - 
; 