Add. Simplify, if possible.-2 + 9
A. 11
B. 7
C. -7
D. -11
Answer: B
Mathematics
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The position vector of a particle is r(t). Find the requested vector.The velocity at t = 3 for r(t) = (3 - 5t2)i + (5t + 8)j - e-5tk
A. v(3) = -30i + 5j - 5e-15k B. v(3) = -30i + 5j + 5e-15k C. v(3) = 30i + 5j + 5e-15k D. v(3) = -15i +5j + 5e-15k
Mathematics
Multiply.0.303
A. 0.0002121 B. 0.02121 C. 0.002121 D. 2.121
Mathematics
Determine whether the function is one-to-one.f(x) = 4x + 9
A. Yes B. No
Mathematics
Write an equation. Then, solve and check.The population of a city is 
It is estimated that this is about 
of the projected population fifty years later. What is the projected population of the city?
A. 6 = 
x; x = 3
million people
B. 6 = 
x; x = 10 million people
C. 6 = x - 
; x = 6
million people
D. x = 
? 6; x = 3
million people
Mathematics