At the hardware store, you purchase a box of nails originally worth $14.99. You have a coupon for 20% off the nails. Sales tax is 6%. What is the total cost for the nails? Must show work!

(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

Which graph represents the parent function of y=(x+2)(x-2)

Which of the following parabolas opens down?