Find the determinant of the matrix and determine if the matrix is invertible 
What will be an ideal response?
?24, invertible
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Solve the system using matrices. If there is no solution or if there are infinitely many solutions and a system's equations are dependent, so state.
A. {(6, -7)} B. {(6, 7)} C. no solution or ? D. infinitely many solutions; dependent equations
Two triangles below are similar. Find missing length(s).
Give your answers as mixed numbers if appropriate.
A. x = 22
; y = 31
B. x = 12; y = 16
C. x = 10; y = 14
D. x = 7; y = 13
Solve the problem.Find the volume V of a sphere of radius 3 in. Use 3.14 for ?. If necessary, round the result to the nearest tenth.
A. V = 37.7 in3 B. V = 904.3 in3 C. V = 113 in3 D. V = 63.6 in3
Fill in the blank with one of the words or phrases listed below.
In the U.S. system of measurement, a(n) 
is the amount of heat required to raise the temperature of 1 pound of water 1 degree Fahrenheit.
A. liter B. gram C. calorie D. British Thermal Unit