Solve the problem.Elaine had 8 buttons. Her grandmother donated 6 cards of buttons to the collection. Elaine sorted the buttons into 8 piles, putting 7 buttons in each pile. How many buttons were on each card from Elaine's grandmother?
A. 48 buttons
B. 8 buttons
C. 6 buttons
D. 51 buttons
Answer: B
Mathematics
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Find the focus and directrix of the parabola with the given equation.x2 = 4y
A. focus: (0, -1) directrix: x = -1 B. focus: (1, 0) directrix: x = 1 C. focus: (1, 0) directrix: y = 1 D. focus: (0, 1) directrix: y = -1
Mathematics
Solve the problem.Compute the instantaneous rate of change of the function at at x = a. 
A. 44 B. 24 C. 12 D. -12
Mathematics
Compute. 
What will be an ideal response?
Mathematics
Multiply and simplify. Assume that all variables represent positive real numbers.
(
+ 
)
A. 5
+ 25
B. 35 + 25
C. 5
+ 5
D. 25
+ 5
Mathematics