Iodine-131 has a half-life of 8 days. How much would be left of an original 40 g sample after 40 days? a) 32g
b) 8g
c) 131g
d) 1.25g
e) 0.8g​

Which expression is equivalent to 2x^2+7x+4?

What describes horizontal cross section of the right rectangle 6m 8m 5m

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?