A class at school had 21 students. When Thanksgiving break came around, there were 24 students in the class. What is the percent increase in the size of the class?

(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

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

The graph of h(x)= |x-10| +6 is shown. on which interval is this graph increasing