The life expectancy 
, measured in years, of a child born 
years after 2003 is given by
.
Identify the slope, and explain in practical terms what it means.
What will be an ideal response?
The slope is 0.18 year per year. For children born after 2003, each 1-year increase in birth date adds 0.18 year to life expectancy.
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Solve the problem.The volume of a sphere is 
Find the volume of a bearing if the diameter is 
A. 45 mm3 B. 140 mm3 C. 780 mm3 D. 44.6 mm3
Find all the second partial derivatives.f(x, y) = x ln (y - x)
A. 
= 
; 
= - 
; 
= 
= 
B. 
= 
; 
= 
; 
= 
= 
C. 
= 
; 
= - 
; 
= 
= - 
D. 
= 
; 
= - 
; 
= 
= 
A child has an enormous jar in which she has been saving all of her spare change. In order to determine exactly how much money she has in the jar, she dumps all of the coins on the floor and counts them. Under the watchful eye of her mother, she counts 180 pennies, 120 nickels, 100 dimes, and 80 quarters.If the child were to grab a handful of 48 coins at random from the jar, how much money should she expect it to be worth?
A. $39.60 B. $4.80 C. $3.78 D. $4.92 E. none of these
Provide an appropriate response.Divide and simplify: 
What will be an ideal response?