Find an upper bound for the magnitude |E| of the error in the linear approximation L to f at the given point over the given region.
at 
R: |x| ? 0.1, |y| ? 0.1
A. |E| ? 5.3278
B. |E| ? 4.6619
C. |E| ? 9.3237
D. |E| ? 2.6639
Answer: D
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Solve the initial value problem for y as a function of x.(x2 + 4)
= 1, y(2) = 0
A. y = 
sin-1 
- 
B. y = 
tan-1 
- 
C. y = 
- 1
D. y = 
tan-1 
Use the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions.s2 + 7s - 8 = 0
A. Two different imaginary solutions B. Two different irrational solutions C. Exactly one rational solution D. Two different rational solutions
Give the coefficient and degree of the term.-6y13
A. 6, 13 B. 13, 6 C. 13, -6 D. -6, 13
Solve the problem.The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test. The linear model for this data is 
where x is number of hours studied and y is score on the test. Use this model to predict the score on the test of a student who studies 13 hours. 
A. 76.2 B. 86.2 C. 86.8 D. 81.2