Jesse buys a new video game that costs $56.90.
if he pays an 8% sales tax and uses a 20% discount,
what will the total amount he will need to
purchase the video game?
can the following expression by used to find the
total?
0.80(56.90)+1.08(56.90)

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g