3.12 Write nested if statements that perform the following test: If amount1 is greater than 10 and amount2 is less than 100, display the greater of the two. 3.13 Write code that tests the variable x to determine whether it is greater than 0. If x is greater than 0, the code should test the variable y to determine whether it is less than 20. If y is less than 20, the code should assign 1 to the variable z. If y is not less than 20, the code should assign 0 to the variable z