Use a proportion to solve the problem.On a map of the Fox River, 1 centimeter represents 4 kilometers. If a trail by the river is actually 19.60 kilometers long, what is the length of the river on the map?
A. 10.6 cm
B. 15.6 cm
C. 4.9 cm
D. 6.9 cm
Answer: C
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Simplify.
A. 
B. 
C. 
D. 
Write in standard notation.2.3 × 104
A. 230,000 B. 23,000 C. 2300 D. 0.00023
The function f is one-to-one. State the domain and the range of f and f-1. Write the domain and range in set-builder notation.f(x) = -4x + 5
A. f(x): D = {x|x > -4}, R = {y|y > 5}; f-1(x): D = {x|x < -4}, R = {y|y < 5} B. f(x): D is all real numbers, R = {y|y > 5}; f-1(x): D is all real numbers, R = {y|y < 5} C. f(x): D is all real numbers, R is all real numbers; f-1(x): D is all real numbers, R is all real numbers D. f(x): D = {x|x > -4}, R is all real numbers; f-1(x): D = {x|x < -4}, R is all real numbers
Solve the problem.Use the chart below to determine how many times brighter Star C is than Star D. (Round to the nearest whole number.)
A. Star C is 8 times brighter than Star D. B. Star C is 9 times brighter than Star D. C. Star C is 178 times brighter than Star D. D. Star C is 63 times brighter than Star D.