Solve the problem.The slide arrow and line of reflection of a glide reflection are given. Find the point of the grid (Q, R, S, or T) that is the same as the image P'' of the point P under two successive glide reflections.
A. Q
B. R
C. T
D. S
Answer: D
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Multiply and simplify.
? 
A. xy
B. 6xy
C. 6x2y2
D. 6xy2
Solve the problem. Assume that simple interest is being calculated in each case. Round the answer to the nearest cent unless otherwise indicated.Martin takes out a simple interest loan at 2 %. After 2 months the amount of interest on the loan is $4.29. What was the amount of the loan? Round to the nearest dollar.
A. $1249 B. $1468 C. $13 D. $1288
Solve the problem.A pendulum bob swings through an arc 40 inches long on its first swing. Each swing thereafter, it swings only 63% as far as on the previous swing. What is the length of the arc after 9 swings? Round your answer to two decimal places, if necessary.
A. 201.6 inches B. 0.39 inches C. 0.99 inches D. 0.63 inches
Solve by transforming the augmented matrix into row echelon form.
A. (9, 7, 4) B. (-9, 4, 18) C. (9, 4, 7) D. no solution