A sample of a radioactive isotope had an initial mass of 620 mg in the year 2003 and decays exponentially over time. A measurement in the year 2005 found that the
sample's mass had decayed to 390 mg. What would be the expected mass of the
sample in the year 2010, to the nearest whole number?

Find the missing factor in exponential form 48^2=3^2 • ?

What are the critical values that correspond to a 95% confidence level and a sample size of 93? a. 65.647, 118.136 b. 59.196, 128.299 c. 57.143, 106.629 d. 69.196, 113.145

Arianna is buying plants for her garden. she buys 15 flowering plants for $96. pink flowering plants sell for $8, and purple flowering plants sell for $5. how many pink flowering plants did arianna buy? i figured out the answer! the answer is 7. 8x +5y = 96 plug in 7 for x 8 (7) + 5y = 96 56 + 5y = 96 subtract 56 from both sides 5y/y = 40/5 y = 8 she bought 7 pink and 8 purple plants