Write a mathematical expression for the word phrase.3 subtracted from 4, decreased by 7
A. (4 + 3) - 7
B. (4 - 3) - 7
C. 7 - (4 - 3)
D. (3 - 4) - 7
Answer: B
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Solve the problem.Find the equation of the sphere with center = (0, -1, 2) and radius = 5.
A. x2 + (y + 1)2 + (z + 2)2 = 25 B. x2 - (y + 1)2 - (z - 2)2 = 25 C. x2 + (y + 1)2 + (z - 2)2 = 25 D. x2 + (y - 1)2 + (z - 2)2 = 25
Solve the problem.A truck rental company charges $31, plus $0.13 per mile to rent a moving truck for a day. If x represents the number of miles driven and f(x) represents the total cost to rent the truck for a day, write a linear function that models the situation.
A. f(x) = 0.13x - 31 B. f(x) = 0.13x + 31 C. f(x) = 31x + 0.13 D. f(x) = 0.13x + 31x
Graph the system of inequalities.y ? - x2 - 6x - 4y ? x2 + 6x + 4
A. 
B. 
C. 
D. 
Solve the problem.Production of television sets is given by P(x,y) = 100[ 
x-2/3 + 
y-1/3 ]-2, where x is work hours and y is the amount of capital. If 
hours and 
of capital are used, what is the production output?
A. 1 B. 16 C. 133 D. 1644