Use the distributive property to rewrite the expression, then simplify if possible
(6x + 8y)
A. 3x + 4y
B. 21xy
C. 9x + 12y
D. 21(x + y)
Answer: C
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Find the limit.
A. 
B. -1
C. - 
D. No limit
Find parametric equations for the line described below.The line through the point P(-7, 4, 4) and perpendicular to the vectors 
and 
A. x = -59t - 7, y = -47t + 4, z = -84t + 4 B. x = -59t - 7, y = 47t + 4, z = -4t + 4 C. x = -59t - 7, y = 47t + 4, z = -84t + 4 D. x = -59t + 7, y = 47t - 4, z = -4t - 4
To find the number of units that gives break-even for the product, solve the equation R = C. Round your answer to the nearest whole unit.A manufacturer has total revenue given by the function R = 70x and has total cost given by 
where x is the number of units produced and sold.
A. 1208 units B. 120 units C. 7250 units D. 20 units
Use substitution to determine whether the given x-value is a solution of the equation.cos 2x = - 
, x = 
A. Yes B. No