Find the total differential for the function 
.
?
A. 
B. ?
C. ?
D. ?
E. ?
Answer: E
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Use a graphing calculator to solve the problem.Let f(x) = sin 
+ cos x on the interval I = (0, 7). Use the graph to estimate where f''(x) < 0 on I.
A. (0, 1.77) ? (4.52, 7) B. (0, 5.77) C. (1.77, 4.52) D. (0, 3.14) ? (3.14, 7)
Answer the question. Give your answer in simplest form.Since there are seven days in the week, how many days are in 
of a week?
A. 3 day(s) B. 7 day(s) C. 4 day(s) D. 11 day(s)
Solve.The product of 7 and a number is equal to 42. Find the number.
A. 294 B. 7 C. 6 D. 35
Solve.A building has an entry with the shape of a parabolic arch 6 ft high and 24 ft wide at the base. Find an equation for the parabola if the vertex is put at the origin of the coordinate system.A = 6 ftB = 24 ft
A. x2 = -24y B. x2 = -96y C. y2 = -96x D. y2 = -24x