Solve the problem.Jim and Tammi climbed to the top of a 21,120-ft mountain. How many miles did they climb?
A. 8 mi
B. 4.5 mi
C. 4 mi
D. 5 mi
Answer: C
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Determine whether the given function satisfies a Laplace equation.f(x, y, z) = 3x + 6y3z2
A. No B. Yes
Solve the problem. Round to tenths where necessary.P(x) = -x3 + 
x2 - 60x + 100, x ? 5 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. 4.5 hundred thousand B. 5.5 hundred thousand C. 5 hundred thousand D. 4 hundred thousand
Solve the problem.Consider a population that grows according to the recursive rule PN = 5 × PN-1, with initial population P0 = 6. Which of the following is an explicit description of this population sequence?
A. PN = 5 × 6N-1 B. PN = 5 × 6N C. PN = 6 × 5N-1 D. PN = 6 × 5N E. none of these
Solve the equation for solutions over the interval [0, 2?). Write solutions as exact values or to four decimal places, as appropriate.sin 
+ cos 
= 
A. 
B. {?}
C. 
D. {0 , ?}