A plane flying horizontally at an altitude of 1 mi and a speed of 550 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 2 mi away from the station.
a. ? 476 mi/h
b. ? 670 mi/h
c. ? 455 mi/h
d. ? 570 mi/h
e. ? 495 mi/h
a. ? 476 mi/h
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Find the derivative of the function.y = 6 sec2x
A. 12 tan x sec2x B. 12 sec1x C. 12 tan2x sec2 x D. 12 tan2x sec1x
Find the slope of the line containing the two given points.(1, 9) and (3, 6)
A. 
B. - 
C. 
D. - 
Combine like terms when possible and write the polynomial in descending powers of the variable. Give the degree of the simplified polynomial. Decide whether the simplified polynomial is a monomial, a trinomial, or none of these.6x6 + 6x4 - 2x6
A. 10x4; 4; monomial B. 10x16; 16; monomial C. Cannot be simplified D. 4x6 + 6x4; 6; binomial
Solve the problem.Scrambled Electronics will finance a $238 TV set for $50 down and $36.81 a month for 6 months. How much money can you save by paying cash for the TV set?
A. $32.86 B. $67.14 C. $17.14 D. $270.86