According to data from the National Vital Statistics Report, the marriage rate (marriages per 1000) can be described by y=-0.146x+11.074, where x is the number of years after 1980. For what years does this model indicate that the marriage rate was above 9 marriages per 1000? Was below 8 marriages per 1000?

Question

Note to people: NEVER take a math class during winter semester in college! You will get an unnecessary amount of homework every night! 100 a questions a night!D: This is my 92nd question!?

Answer 1

well, just answer the question. Find x when y=9.

-0.146x+11.074 > 9
-0.146x > -2.074
x < 14.2
So, 1980-1994

Do the other in like wise.

Answer 2

Tiffany purchased a $10,000, 13-week Treasury bill that's paying 2.25%. What is the effective rate on this T-bill?