Evaluate the polynomial.-2x5 + 3x4 - 4x3 - x2for x = 2
A. -52
B. -57
C. -56
D. -23
Answer: A
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Write the sentence as an equation or inequality. Use x to represent any unknown number.Three subtracted from a number is 0.
A. 3x = 0 B. 3 - x = 0 C. x + 3 = 0 D. x - 3 = 0
The following data show the diameter D and the height H, both in feet, of certain mature trees. Tree Cottonwood Hackberry Weeping willow Ponderosa pine Douglas fir D 2.4 5.06 6.07 8.06 14.08 H 80.87 113.1 95.05 164.81 223.23? A: Use power regression to model the height as a function of the diameter. Use two digits of accuracy for the coefficient and for the power.B: According to the model, what is the diameter of a mature tree that is 7.89 feet tall? Round your answer to two decimal places.C: If one mature tree has 4 times the diameter of another, how do their heights compare? Round your answer to two decimal places.
What will be an ideal response?
Solve the initial value problem.Differential Equation: 
= -3ti + 3tj + 5tkInitial Condition: r(0) = -4i + 6k
A. r(t) = (-3t2 - 8)i + 3t2j + (5t2 + 12)k
B. r(t) = 
i + 
t2j + 
k
C. r(t) = 
i + 
t2j - 
k
D. r(t) = 
i + 
t2j + 
k
Perform the computation.9 - (-4)
A. 5 B. 13 C. -13 D. -5