In the year 1997, the age-adjusted death rate per 100,000 americans for heart disease was 246.9. in the year 1998, the age-adjusted death rate per 100,000 americans for heart disease had changed to 238.6. a) find an exponential model for this data, where t = 0 corresponds to 1997. f ( t ) = b) assuming the model remains accurate, estimate the death rate in 2029. (round to the nearest tenth.)

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet