Write the sentence as an equation.The product of -11 and -7 gives 77.
A. 11(7) = 77
B. -11(-7) = 77
C. 
= 77
D. -11 - 7 = 77
Answer: B
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Solve the problem below by setting up and solving a system of two linear equations in two variables.A 13% salt solution is to be mixed with a 18% salt solution to produce 10 gallons of a 16% salt solution. How many gallons of the 13% solution and how many gallons of the 18% solution will be needed?
A. 3 gallons of 13% and 5 gallons of 18% B. 8 gallons of 13% and 10 gallons of 18% C. 16 gallons of 13% and 18 gallons of 18% D. 4 gallons of 13% and 6 gallons of 18% E. 18 gallons of 13% and 20 gallons of 18%
Use the rules for exponents to rewrite the expression and then evaluate the new expression. (-2)2(-2)3
A. -64
B. -32
C. 
D. 
Find the coordinates of the vertex and the intercepts of the quadratic function. When necessary, approximate the x-intercepts to the nearest tenth.s(x) = -x2 - 18x - 72
A. V(-18, -72); I(0, -72); (-18, 0); (18, 0) B. V(9, 9); I(0, -72); no x-intercepts C. V(18, -72); I(0, 72); (12, 0); (6, 0) D. V(-9, 9); I(0, -72); (-6, 0); (-12, 0)
Use the graph to guess possible linear factors of f(x). Then completely factor f(x) with the aid of synthetic division. f(x) = 5x3 + 33x2 + 31x - 69
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
