Answer:
2
Step-by-step explanation:
substitute n=1 and n=3 in the given equation
1 st term is (1)^2-1-2 = 1 -1 -2 = -2
3rd term is (3)^2-3-2 = 9-3-2=4
sum of 1st and 3rd term is -2 + 4 = 2
Stairs because they can’t possibly walk up the stairs cause then they’ll fall
10 cents, cause the {ball +$1.00=$1.10} subtract $1 from both sides the ball=$0.10
