Solve the problem. Use 3.14 as an approximation for ? where appropriate.Calculate the surface area of an unopened steel can that has a height of 4 cm and a radius of 9 cm.
A. 1,017.4 cm2
B. 367.4 cm2
C. 734.8 cm2
D. 621.7 cm2
Answer: C
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Solve the problem.Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a 70-hour review course average a score of 791. Find a linear function S(t), which fits this data, and which expresses score as a function of time.
A. S(t) = 3.8475t - 495.75 B. S(t) = -4.275t + 491.75 C. S(t) = 3.8475t + 495.75 D. S(t) = 4.275t + 491.75
Solve the problem.A meteor circles the earth in an elliptical orbit. The major axis of the elliptical orbit is 22 × 108 miles long, and the minor axis is 12 × 108 miles long. If the earth is at one focus of the orbit, what is its distance from the other focus?
A. 2
× 108 miles
B. 2
× 104 miles
C. 
× 104 miles
D. 
× 108 miles
Write the expression in i notation.
A. ±5
B. -5i
C. -i
D. 5i
Find the reference angle of the given angle.428°
A. 158° B. 112° C. 68° D. 22°