Help me please I beg

(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 this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.