Use the total differential dz to approximate the change in z as (x, y) moves from P to Q. Then use a calculator to find the corresponding exact change ?z (to the accuracy of your calculator).tan-1 (x2y;) P(1, 1), Q(0.97, 1.02)
A. dz = 0.02; ?z = 0.0205521041
B. dz = -0.02; ?z = -0.0205521041
C. dz = 0.2; ?z = -0.205521041
D. dz = -0.2; ?z = -0.205521041
Answer: B
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Add and write the resulting polynomial in descending order.
+ 
A. 2y4 + 
y3 - 3y2 + 9y + 2
B. 2y4 + 
y3 - 3y2 + 9y + 18
C. 2y4 + 
y3 - 3y2 + 9y + 2
D. 2y4 + 
y3 - 2y2 + 11y + 2
Choose the most reasonable metric length unit. Choose from km, m, cm, and mm.The height of the paperback book is 18 
.
A. cm B. mm C. m D. km
Determine the end behavior, the y-intercept, all real zeros, and at least one test value between each intercept. Then connect the points with a smooth curve.f(x) = 2x4 - 7x3 + 11x - 4
What will be an ideal response?
Estimate by rounding as directed.32.462 - 10.3723; nearest tenth
A. 22.5 B. 22.7 C. 22.1 D. 22.3