I need someone to solve question five a b and c plz

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

The table shows the number of students who signed up for different after school activities. activity students cooking 9 chess 4 photography 8 robotics 11 select the true statements about the information in the table.

Sally deposited money into a savings account paying 4% simple interest per year.the first year,she earned $75 in interest.how much interest will she earn during the following year?