Can someone help with this ?

Calculate the effective quarterly compound interest rate equivalent to a 1% of monthly compound interest rate.

X^2/100+y^2/25=1 the length of the major axis is: a)5 b)10 c)20

Is the response to the survey question "did you smoke in the last week question mark "response to the survey question "did you smoke in the last week? " a discrete random variable, a continuous random variable, or not a random variable?