The figure shows the graph of a function. At the given value of x, does the function appear to be differentiable, continuous but not differentiable, or neither continuous nor differentiable?x = 1
A. Differentiable
B. Continuous but not differentiable
C. Neither continuous nor differentiable
Answer: C
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Use scientific notation to solve the problem.Suppose that we could somehow capture all the energy released by the Sun in just one second. For how many years could U.S. energy needs be met by this energy? Assume that the annual energy generation of the Sun is 
joules and that U.S. annual energy consumption is 1 × 1020 joules. Give your answer in scientific notation.
A. 3.17 × 101.3 years B. 7.61 × 106 years C. 1 × 1014 years D. 3.17 × 106 years
Solve the problem.The current i (in A) in an amplifier circuit as a function of the time t (in s) is given by 
Find the expression for the voltage across a 5.0-mH inductor in the circuit.[An inductor in an electric circuit is a coil of wire in which the voltage is affected by a changing current. The voltage caused by the changing current is given by VL = L(di/dt) where L is the inductance in H.]
A. 0.18? cos(120?t + ?/5) B. 36? cos(120?t + ?/5) C. 0.0015 sin(120?t + ?/5) D. 0.0015 cos(120?t + ?/5)
Multiply or divide. Simplify, if possible. Assume all variables and radicands represent nonnegative real numbers.
A. 2
B. 
C. 5
D. 5
Add.344 + 232
A. 747 B. 675 C. 756 D. 576