The temperature on Saturday was °C. On Sunday, it became °C colder. What was the temperature on Sunday?

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}

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