Simplify. Assume that all variables represent positive real numbers.
A. 
B. x4
C. 
D. 
Answer: A
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Use the distributive property to multiply. Then, if possible, simplify the resulting expression.3(7 + m)
A. 21m B. 21 + m C. 21 + 7m D. 21 + 3m
Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = 
A. ? B. 0 C. 1 D. No limit
Provide an appropriate response.The time it takes to go a given distance depends on the rate.(a)Write a function t(r) for the time it takes if the distance is 400 miles and the rate is r miles per hour.(b)How much time is needed when the rate is x?(c)If the speed is increased by 10 miles per hour, how much less time is needed?(d)How much less time is needed per mile per hour increase?(e)If the speed is increased by h, how much less time is needed?(f)How much less time is needed per unit increase?
What will be an ideal response?
Find the slope of the line satisfying the given conditions.through (-3, -6) and (7, 6)
A. 
B. - 
C. - 
D. 