Solve.In the rectangles below, the ratio of length to width is the same. Find the length of the larger rectangle.
A. 15 ft
B. 16 ft
C. 13 ft
D. 14 ft
Answer: A
Mathematics
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Determine if the graph of the function is concave up or concave down.g(x) = (x - 3)2 + 2
A. Concave up B. Concave down
Mathematics
Solve the problem.The data lists braking distances D in feet for cars traveling at x miles per hour on dry, level pavement. Find a function given by D(x) = ax2 that models these data. 
A. D(x) = 
x2
B. D(x) = 
x2
C. D(x) = 18x2
D. D(x) = 9x2
Mathematics
Determine whether the given function is one-to-one. If it is one-to-one, find its inverse.f(x) = 5 - x
A. f-1(x) = 
B. f-1(x) = 5 - x
C. f-1(x) = x - 5
D. f-1(x) = x + 5
Mathematics
Solve the equation for ? if 
. Do not use a calculator.
?
?
A. 120°; 240° B. 150°; 330° C. 60°; 240° D. 45°; 225° E. 30°; 120°
Mathematics