Find a quadratic function that best fits the data. Give answers to the nearest hundredth.
A. y = 0.21 - 1.28x + 6.44
B. y = 0.20x2 + 0.33x + 3.52
C. y = -0.13x2 - 0.67x + 6.86
D. y = 0.20x2 - 0.33x + 3.52
Answer: D
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Solve the problem.A rescue cable attached to a helicopter weighs 2 lb/ft. A 160-lb man grabs the end of the rope and is pulled from the ocean into the helicopter. How much work is done in lifting the man if the helicopter is 30 ft above the water?
A. 4860 ft ? lb B. 5700 ft ? lb C. 1060 ft ? lb D. 6600 ft ? lb
List the elements in the set.The set of the days of the week
A. {Tuesday, Thursday} B. {Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Sunday} C. {Friday, Monday, Saturday, Sunday, Thursday, Tuesday, Wednesday} D. {Saturday, Sunday}
Find the prime factors for the number 8.
a. 2, 2 b. 3, 3 c. 2, 3 d. 2, 4
Add and simplify.
+ 
A. - 
B. 
C. - 
D. 