Write the number without exponents.8.42 × 100
A. 0.842
B. 0
C. 842
D. 8.42
Answer: D
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Provide an appropriate response.Without multiplying by the least common denominator and solving, explain why the rational equation 
has no solution. (Hint: Examine both numerators and denominators carefully.)
What will be an ideal response?
Write an equation that models the described quantity. Specify what each variable represents.A gambler has lost $2000 and is losing money at a rate of $400 per hour.
A. l = -400t + 2000, where l represents total lost in dollars and t represents time in hours B. l = -400t - 2000, where l represents total lost in dollars and t represents time in hours C. l = 400t - 2000, where l represents total lost in dollars and t represents time in hours D. l = 400t + 2000, where l represents total lost in dollars and t represents time in hours
Solve the problem.Suppose f(x) = 33.6 + 1.4log (x + 1) models salinity of ocean water to depths of 
at a certain latitude. x is the depth in meters and f(x) is in grams of salt per kilogram of seawater. Approximate the depth (to the nearest tenth of a meter) where the salinity equals 38.
A. -0.9 meters B. 1390.5 meters C. -1.0 meters D. 1388.5 meters
Solve the problem.The voltage E in an electrical circuit is given by E = 1.7 cos 80?t, where t is time measured in seconds. Find the amplitude.
A. 80? B. 3.4 C. 80 D. 1.7