Solve the problem. Round to tenths where necessary.P(x) = -x3 + 24x2 - 144x + 50, x ? 2 is an approximation to the total profit (in thousands of dollars) from the sale of x hundred thousand tires. Find the number of hundred thousands of tires that must be sold to maximize profit.
A. 4 hundred thousand
B. 2 hundred thousand
C. 12 hundred thousand
D. 10 hundred thousand
Answer: C
Mathematics
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Express the relationship between a small change in x and the corresponding change in y in the form 
.y = 
A. dy = 
dx
B. dy = 
dx
C. dy = 
dx
D. dy = 
dx
Mathematics
Use implicit differentiation to find dy/dx and d2y/dx2.xy - x + y = 3
A. 
= - 
; 
= 
B. 
= - 
; 
= 
C. 
= 
; 
= 
D. 
= 
; 
= 
Mathematics
Solve.A rectangular piece of fabric is 
by 
A triangular area with a height of 
and a base of 
is cut from the fabric. How much area is left over?
A. 347.2 ft2 B. 259.8 ft2 C. 276.9 ft2 D. 519.6 ft2
Mathematics
Solve.Today is Kurt's 27th birthday. How many months has he been alive?
A. 325 mo B. 270 mo C. 324 mo D. 243 mo
Mathematics