Solve the equation for the specified variable. Use the distributive property to factor as necessary.c = 
for t
A. t = 
or t = 
B. t = 
or t = 
C. t = 
or t = 
D. t = 
or t = 
Answer: D
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Solve the problem.A garden has vegetables planted in a 
by 
area. The vegetables are surrounded by a 
border of flowers. By what percent is the area for planting vegetables increased if the 
border of flowers is removed?
A. 38.1% B. 12.9% C. 37% D. 14%
Solve the problem by integration.Under specified conditions, the time t (in min) required to form x grams of a substance during a chemical reaction is given by 
Find the equation relating t and x if x = 0 g when 
A. t = 
ln 
- 
ln 
B. t = 
ln 
+ 
ln 
C. t = 
ln 
- 
ln 
D. t = 
ln 
+ 
ln 
Solve the rational equation.2 = 
+ 
A. 
B. 
C. 
D. 
Solve the problem.A piece of farm machinery costs 
and depreciates at the rate of 
per year.a) If y represents the the value of the machinery after x years, write an equation for the value of the machinery.b) Graph the equation.c) What is the relationship between the slope of the line and the per-year depreciation?
A. a) y = 510x - 6000
b) 
c) The magnitude of the slope of the line is
the same as the per-year depreciation.
B. a) y = 510x + 6000
b) 
c) The magnitude of the slope of the line is
the same as the per-year depreciation.
C. a) 6000 = y - 510x
b) 
c) The magnitude of the slope of the line is
the same as the per-year depreciation.
D. a) y = 6000 - 510x
b) 
c) The magnitude of the slope of the line is
the same as the per-year depreciation.