Use the definition of inverses to determine whether f and g are inverses.f(x) = 7x - 7, g(x) = 
x + 1
A. No
B. Yes
Answer: B
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What part of the object or set of objects is shaded?
A. 
B. 
C. 
D. 
Solve.A chemist needs 11 liters of a 50% salt solution. All she has available is a 20% salt solution and a 70% salt solution. How much of each of the two solutions should she mix to obtain her desired solution?
A. 3.3 liters of the 20% solution; 7.7 liters of the 70% solution B. 2.2 liters of the 20% solution; 8.8 liters of the 70% solution C. 4.4 liters of the 20% solution; 6.6 liters of the 70% solution D. 5.5 liters of the 20% solution; 5.5 liters of the 70% solution
Solve the problem.The radius of a sphere depends on its surface area, S, and is given by the formula r = 
. What is the surface area of a sphere with radius of 3.5 inches? Use 3.14 for ?. Round to the nearest tenth when necessary.
A. 11 sq in. B. 38.5 sq in. C. 44 sq in. D. 153.9 sq in.
Determine whether the function is one-to-one by graphing and using the horizontal line test.f(x) = 
A. Yes B. No