Perform the operations and simplify.?
?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Answer: A
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Solve the problem.A company's monthly sales, in thousands, is given by S(x, y) = 6x0.8y0.5, where x is the amount spent on newspaper advertising per month in thousands of dollars and y is the amount spent on radio advertising per month in thousands of dollars. Suppose the company currently spends $4000 on newspaper advertising per month and $2000 on radio advertising per month. What would be the effect on sales if the company increases the amount spent on newspaper advertising to $5000, while the amount spent on radio advertising remains constant?
A. Sales would increase by $6430.64. B. Sales would increase by $39,932.74. C. Sales would increase by $4919.97. D. Sales would decrease by $492.00.
Provide an appropriate response.Add the following: 56.76 + 7.7
A. 57.53 B. 64.46 C. 13.376 D. 63.146 E. none of the above
Evaluate the integral.
A. 
B. 
C. 21
D. 
Multiply.
A. - 
x7
B. - 
x12
C. 
x7
D. 
x12