Find all real numbers in the interval [0, 2?) that satisfy the equation.sin2x - cos2x = 0
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem.It costs $300 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. What would be the cost to produce 700 hot dogs?
A. $860 B. $56,300 C. $560 D. $380
Solve the problem.In chemistry, the pH of a substance is defined by 
where 
is the hydrogen ion concentration in moles per liter. Find the 
of a sample of lake water whose 
is 3.05 × 10-9 moles per liter. (Round to the nearest tenth.)
A. 6.4 B. 7.3 C. 8.5 D. 10.1
Provide an appropriate response.A pediatric speech therapist started her own practice in 2004. The function y = 3.2 x + 10.53 models the number of patients she treated each year, where x is the number of years after 2004. The model was found using data for the years between 2004 and 2012. What does the model estimate as the number of patients in 2014? Round to the nearest whole number. Is this interpolation or extrapolation?
A. 44; interpolation B. 43; interpolation C. 45; extrapolation D. 43; extrapolation
Determine whether the polynomial is a perfect square trinomial, a difference of squares, or neither.x2 - 59
A. Perfect square trinomial B. Neither C. Difference of squares