I buy T stamps at Q cents each, S stamps at R cents each, and give the post-office clerk one dollar. If P = 8, Q = 7, R = 5, S = 2, and T = 6, how many stamps at P cents can I buy with the change? * A. 4
B. 6
C. 7
D. 8
E. 9

Solve the system of equations. y= 2x y= x^2 - 15

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Which two transformations are applied to pentagon abcde to create a'b'c'd'e'? (4 points) translated according to the rule (x, y) ? (x + 8, y + 2) and reflected across the x-axis translated according to the rule (x, y) ? (x + 2, y + 8) and reflected across the y-axis translated according to the rule (x, y) ? (x + 8, y + 2) and reflected across the y-axis translated according to the rule (x, y) ? (x + 2, y + 8) and reflected across the x-axis