z = f (x, y) = y2/ x; a = 9, b = 3, x = 2.71, y = 4.05
For the following functions, use linearization and the values of z, 
at (a b) to estimate z (x, y) .
2.399
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Perform the indicated operations, expressing the answer in simplest form with rationalized denominators.
A. 
B. 22
C. 
D. 44
If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.Find the acceleration vector.r(t) = (7 cos t)i + (6 sin t)j
A. a = (-7 cos t)i + (-6 sin t)j B. a = (-7 sin t)i + (-6 cos t)j C. a = (7 sin t)i + (6 cos t)j D. a = (7 cos t)i + (6 sin t)j
Solve the problem.The driver of a car traveling at 42 ft/sec suddenly applies the brakes. The position of the car is 
t seconds after the driver applies the brakes. How far does the car go before coming to a stop?
A. 588 ft B. 294 ft C. 7 ft D. 147 ft
Simplify.
÷ 
A. 
B. 
C. 
D. 