Solve the problem.Alex always takes $20 more than he anticipates needing on a date. If Alex takes $50 on his date with Judith, find the amount of money Alex anticipates needing for this date.
A. $30
B. $50
C. $20
D. $70
Answer: A
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Find all real numbers that satisfy the equation.cot 
= 1
A. 
B. 
C. 
D. 
Determine whether the function satisfies a Laplace equation.f(x, y) = e-9y sin(-9x)
A. Yes B. No
Find the mean.Jill kept track of the number of hours she spent exercising each week. The results for four months are listed below. Find the mean number of hours Jill spent exercising per week. Round your answer to one decimal place if necessary. 6.7 7.4 7.5 8.6 7.3 6.7 8.7 7.5 8.2 6.7 8.6 8.3 8.8 7.4 7.4 8.2 7.3 8.7
A. 8.2 B. 7.8 C. 7.4 D. 8.0
Find a point-slope form for the line satisfying the conditions. When two points are given, use the first point in the point -slope form.Slope -4, passing through (6, -5)
A. y - 6 = -4(x + 5) B. y + 5 = -4(x + 6) C. y + 6 = -4(x + 5) D. y + 5 = -4(x - 6)