M-x=p+n, for xhow do i solve step by step

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

Read the situations in the table below. then drag a graph and equation to represent each situation. indicate whether each of the relationships is proportional or non-proportional. edit : i got the right answer its attached

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?