Suppose u and v are differentiable functions of x. Use the given values of the functions and their derivatives to find the value of the indicated derivative.u(2) = 6, u '(2) = 2, v(2) = -3, v '(2) = -4.
at x = 2
A. 
B. 2
C. - 
D. - 6
Answer: B
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Find the center of mass (in cm) of the particles with the given masses located at the given points on the x-axis.11 g at (-2.5, 0), 17 g at (2.8, 0), 31 g at (6.5, 0)
A. 1.1 cm B. 3.8 cm C. 8.7 cm D. 33 cm
Use the sum/difference identities to simplify the expression. Do not use a calculator.cos 
cos 
+ sin 
sin 
A. cos 
B. cos 
C. cos 
D. cos 
Using a formula of src="https://sciemce.com/media/3/ppg__cognero__Section_3.7_Order_of_Operations_and_Complex_Factors__media__de6d4789-0998-4a84-87fa-f4dfaa12f88b.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_c4a9930ee16a46f4a6aedb543" /> ounce of lanolin, a beautician mixes her own brand of skin cream. She packages it in 
ounce of sun block, 
ounce of moisturizing cream, and 
ounce tubes. How many tubes can be produced using this formula?
?
A. 
tubes
B. 
tubes
C. 
tubes
D. 
tubes
E. 
tubes
Perform the operations indicated.-14 - 24 + (-8) - 12
A. -58 B. 6 C. -10 D. 18