Alex took out a 7/1 variable-rate mortgage for $140,000. the interest rate for

the first period was fixed at 5.25%, and the loan was amortized over 30 years.

at the end of the initial loan period, the interest rate was 6.75%, plus a 1.5%

margin. what will the unpaid balance on his mortgage be after his initial

period expires?

a. $123,740.97

b. $126,805.34

c. $123,739.09

d. $122,773.09

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)