Need help on these ASAP

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

Human body temperatures have a mean of 98.20° f and a standard deviation of 0.62°. sally's temperature can be described by z = 1.4. what is her temperature? round your answer to the nearest hundredth. 99.07°f 97.33°f 99.60°f 100.45°f

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?