Yes or no to tell whether the expression represents a 20% discount off the price of an item that originally cost 0.8d
d-0.2
d-0.2d
1-0.2d

6.(q^9)^2 a. 2q^18 b. q^18 c. q^81 d.q^11 7.(6q^6)^-4 a. 6q^1296 b. 1296q^2 c. 1/1296q^24 d. 6q^-24 8. what is the value of 12x^-3 y^-1 for x = -1 and y = 5? a. -12/5 b.-10 c.-0 d.5/12

What are “like terms”? why can we only add like terms?

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