A farmer, worried about his fruit trees suffering frost damage, calls the weather service for temperature information. He is told that temperatures will be decreasing approximately 
every hour for the next 4 hours. What signed number represents the total change in temperature expected over the next 4 hours?
?
Fill in the blank(s) with the appropriate word(s).
–16
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Factor completely.mn2 - 9m + 6n2 - 54
A. (m + 6)(n - 3) B. (mn + 3)(n - 3) C. (mn + 6)(n + 3m)(n + 3m) D. (m + 6)(n + 3)(n - 3)
Answer the question.True or False.The absolute value of any nonzero number is an irrational number.
Answer the following statement true (T) or false (F)
Solve the problem.dy/dt = ky + f(t) is a population model where y is the population at time t and f(t) is some function to describe the net effect on the population. Assume k = .02 and 
when t = 0. Solve the differential equation of y when f(t) = 9t.
A. y = -450t - 22,500 + 32,500e-.02t B. y = 450t - 22,500 + 32,500e-.02t C. y = 450t + 22,500 + 32,500e-.02t D. y = -450t - 22,500 + 32,500e.02t
Find the present value for the given future amount. Round to the nearest cent.A = $4700, 10 years r = 5% compounded annually
A. $7655.80 B. $1814.61 C. $2885.39 D. $3029.66