Sketch a set of coordinate axes and plot the given point.
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Find the derivative of the function.y = 
A. 
= -18x10 + 14x8 - 3x4
B. 
= - 
+ 
- 
C. 
= - 
+ 
- 
D. 
= 
- 
+ 
Find the required value by setting up the general equation and then evaluating.Find v when r = 6, s = 4, and t = 3 if v varies jointly as r and s and inversely as the square of t, and v = 4 when r = 3, s = 9, and t = 9.
A. 
B. 96
C. 32
D. 16
Solve by the substitution method. If the system is inconsistent or dependent, say so.x + y = 8x + y = 7
A. (0, 15) B. (8, 7) C. (0, 0) D. Inconsistent
Solve the problem.
The function f computes the annual interest paid on savings of x dollars with an interest rate of 9%. The graph of f and the horizontal line 
are shown in the figure. Determine the savings amounts that result in (i) an annual interest less than $3.15 and (ii) an annual interest of $3.15 or more.
A. Between $5 and $35; $35 or more B. $35 or less; between $35 and $40 C. $35 or more; $35 D. Between $0 and $35; $35 or more