(zoom / zoom out if needed to see question. (: )

can someone me with this problem ? i'll seriously appreciate it, and you so so so much in
don't answer if you're ! i need actual , don't just take my points. (: you!

Somone me i want to know what 18 hours out of 24 hours in a fraction

Reflect the point (7,0) across the y-axis

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics