Write a chain rule formula for the following derivative.
for w = f(x, y, z); x = g(r, s, t), y = h(r, s, t), z = k(r, s, t)
A. 
= 
+ 
+ 
B. 
= 
+ 
+ 
C. 
= 
+ 
+ 
D. 
= 
+ 
Answer: C
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Determine the number of significant digits in the given approximate number.7080
A. 3 B. 4 C. 2 D. 1
Use a graphing calculator to graph the equation and identify the x-intercepts. If your answers are not exact, round to the nearest tenth.y = -2.5x2 + 8.9x - 1.5
A. x-intercepts: (-3.7, 0) and (0.2, 0)
B. x-intercepts: (0.2, 0) and (3.4, 0)
C. x-intercept: (1.8, 6.4)
D. x-intercept: (0, -1.5)
Find a formula for the inverse of the function described below.A size-12 dress in Country C is size 48 in Country D. A function that converts dress sizes in Country C to those in Country D is 
A. f-1(x) = 
B. f-1(x) = x - 36
C. f-1(x) = x + 36
D. f-1(x) = 
Write the fraction as a decimal in hundredths with the remainder expressed as a fraction.
A. 0.08 
B. 0.08 
C. 0.08 
D. 0.08 