A collection of coins has a value of $4.89. There is the same number of nickels and dimes but seven fewer pennies than nickels or dimes. How many pennies are in the collection if there are 86 coins?
?
__________ pennies
Fill in the blank(s) with the appropriate word(s).
24
Mathematics
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Determine an appropriate viewing window for the given function and use it to display its graph.f(x) = x4 - 4x3 + 14x2 + x - 15
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The perimeter of a rectangle is 60 m. If the width were doubled and the length were increased by 21 m, the perimeter would be 112 m. What are the length and width of the rectangle?
A. width 15, length 15 B. width 25, length 5 C. width 10, length 15 D. width 5, length 25
Mathematics
Find the derivative.f(x) = (2x2 - 9)5
A. 20(2x2 - 9)4 B. 20x(2x2 - 9)4 C. 5(2x2 - 9)4 D. (20x - 9)(2x2 - 9)4
Mathematics
Solve the equation.5(x + 4) = 6(x - 7)
A. {62} B. {-62} C. {6} D. {-22}
Mathematics