1. Is the following valid, given the class SavingsAccount in Listing 6.7? SavingsAccount.addInterest(); 2. What values are returned by each of the following? a. Math.round(2.3) b. Math.round(2.7) c....

1. Is the following valid, given the class SavingsAccount in Listing 6.7?

SavingsAccount.addInterest();

2. What values are returned by each of the following?

a. Math.round(2.3)

b. Math.round(2.7)

c. Math.floor(2.3)

d. Math.floor(2.7)

e. Math.ceil(2.3)

f. Math.ceil(2.7)

g. (int) (Math.random() * 10.0) + 10;

3. Suppose that speed is a variable of type double and you want to assign

Math.round(speed) to the variable approxSpeed, which is of type int.

How do you write the assignment statement?