The matrix c=1,-2,-3,7 was used to encode a phase to 7,-28,-25,-35,-2,-21,107,90,123,17. find d-1 and use it to decode the matrix

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

Lines a and b are parallel. what is the value of x? -5 -10 -35 -55