Help !! please. 9 and 10.

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

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry