Find the partial sum of the given sequence.
A. 1404
B. 732
C. -540
D. 756
Answer: D
Mathematics
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Multiply.(-5)(-6)
A. 30 B. -30 C. 11 D. -11
Mathematics
Find the exact value. Do not use a calculator.cot 
A. 1 B. 0 C. -1 D. undefined
Mathematics
Solve the problem.It costs $900 to start up a business of selling hot dogs. Each hot dog costs 
to produce. Let y be the cost in dollars of producing x hot dogs. Write the cost equation.
A. y = .55x - 900 B. y = .55x + 900 C. y = 900x + .55 D. y = 55x + 900
Mathematics
Show by substitution whether the number r is a solution of the corresponding quadratic equation.x2 - 7x + 10 = 0; r = -5
A. Yes B. No
Mathematics