Write the phrase as a variable expression. Use x to represent "a number."Nine times the sum of a number and -40
A. 9+ x + (-40)
B. 9x + (-40)
C. 9[x + (-40)]
D. 9x - (-40)
Answer: C
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Let A = {q, s, u, v, w, x, y, z}, B = {q, s, y, z}, 
and 
Specify the following set.A ? D
A. {s} or D B. {q, s, u, v, w, x, y} C. {s, u, w} D. {v, x}
Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (5, 5, 5) for 2x2 + 7 ln xz + 5yz2 + 8ez = 0.
A. - 
B. - 
C. 
D. - 
Use a table or a calculator to evaluate the function. Round to four decimal places.cot 0.2265
A. 0.9745 B. 4.3393 C. 1.0262 D. 0.2305
Use an equation to solve the problem. ? The average price of homes in one neighborhood decreased 8% since last year, a drop of $5,800. What was the average price of a home last year? ?
A. $69,500 B. $74,500 C. $73,500 D. $72,500 E. $76,500