Can you guys help me pleasee

Your friend swims on the school team. in his first four races, his times are 24.7, 23.5, 25.6, and 27.2 seconds. which time listed for his next race would make the range larger?

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

What were mkh company's cash flows from (for) operating activities in 20x1? $(180,300) $233,100 $268,200 $279,400?