Identify the polynomial as a monomial, binomial, trinomial, or none of these.9z4 + 7z3 + 2z2 + 9
A. Trinomial
B. Binomial
C. None of these
D. Monomial
Answer: C
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Solve the problem.The distance an object is from the ground after being tossed from a hot air balloon 830 feet in the air is a function of time: 
where y is height and t is the amount of time the object has been in the air. Predict the height of the object after 5.5 seconds. Round to the nearest hundredth.
A. 311.08 ft B. 0.00 ft C. 374.88 ft D. 773.35 ft
Find the standard deviation. Round to the nearest tenth.11, 16, 12, 12, 24, 13, 15, 23, 24, 20
A. 15.5 B. 17 C. 25 D. 5
Use reference angles to find the exact value of the expression. Do not use a calculator.tan 
A. 
B. - 
C. 
D. 
A 420-ft oil well is to be drilled. The cost of drilling first foot is $14.00, and the cost of drilling each additinal foot is $4.42 more than that of the preceding foot. Find the cost of drilling the entire 380 ft. Round your answers to nearest integer.
a. The cost of drilling the entire 380 ft is $325,530. b. The cost of drilling the entire 380 ft is $320,773. c. The cost of drilling the entire 380 ft is $321,876. d. The cost of drilling the entire 380 ft is $323,604. e. The cost of drilling the entire 380 ft is $324,676.