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What is the rate of change of a line that passes through (2,-5) and (6,-2)?

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.