The associative and commutative properties for addition allow for three or more integers to be added in any order. Find the given sum.-1 + 5 + (-11)
A. -17
B. -7
C. 15
D. -5
Answer: B
Mathematics
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Solve the problem.When going more than 38 miles per hour, the gas mileage of a certain car fits the model 
where x is the speed of the car in miles per hour and y is the miles per gallon of gasoline. Based on this model, at what speed will the car average 15 miles per gallon? (Round to nearest whole number.)
A. 98 mph B. 48 mph C. 149 mph D. 73 mph
Mathematics
Find all solutions to the equation. Express the solution in degrees.tan x = 1
A. 135° + 180°n B. 90° + 180°n C. 45° + 360°n D. 45° + 180°n
Mathematics
Divide.
A. 27 B. 270 C. 2.7 D. 28
Mathematics
Find the derivative.f(x) = 3x4 + 3x3 + 9
A. f'(x) = 4x3 + 3x2 - 7 B. f'(x) = 12x3 + 9x2 C. f'(x) = 12x3 + 9x2 - 7 D. f'(x) = 4x3 + 3x2
Mathematics