the variable x varies jointly y and z and x=8 when y =-6 and z=-3. find k and write the joint variation equation

(a) (8%) compute the probability of an even integer among the 100 integers 1! , 2! , 3! , until 100! (here n! is n factorial or n*(n-1)*(n-2) *… 1) (b) (16%) compute the probability of an even integer among the 100 integers: 1, 1+2, 1+2+3, 1+2+3+4, …., 1+2+3+… + 99, and 1+2+3+… + 100

Solve the system of equations y= 3/2 - 1, -x+ y =-3

How many solutions does the nonlinear system of equations graphed bellow have?