Determine whether the ratios are proportional.
and 
A. Yes
B. No
Answer: B
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Find the LCD for the fractions in the list.
, 
A. 2x4 B. 8x7 C. x7 D. x4
Use the quadratic function to determine if the function has a maximum or minimum value and then find this maximum or minimum value.f(x) = -4x2 - 24x - 43
A. maximum at (7, 3) B. maximum at (-3, -7) C. minimum at (0, 3) D. minimum at (7, 0)
Solve the problem.If a rock falls from a height of 90 meters on Earth, the height H (in meters) after x seconds is approximately H(x) = 90 - 4.9x2.When does the rock strike the ground? Round to the nearest hundredth, if necessary.
A. 3.75 sec B. 18.37 sec C. 4.29 sec D. 1.94 sec
Write interval notation for the following. Then graph the interval on a number line.{x?-6 ? x ? -2}
A. (-6, -2]
B. [-6, -2)
C. [-6, -2]
D. (-6, -2)