Write the number in scientific notation.An music album sells 575,000 copies.
A. 5.75 × 103
B. 5.75 × 10-4
C. 5.75 × 105
D. 5.75 × 104
Answer: C
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if 
.
A. 
B. 
C. 
D. 
Solve each problem.A rectangular field is to be enclosed on four sides with a fence. Fencing costs 
for two opposite sides, and 
for the other two sides. Find the dimensions of the field of area 
that would be the cheapest to enclose.
A. 15.7 ft @ $7 by 54.9 ft @ $2 B. 8.4 ft @ $7 by 102.6 ft @ $2 C. 54.9 ft @ $7 by 15.7 ft @ $2 D. 102.6 ft @ $7 by 8.4 ft @ $2
Evaluate the expression for the given replacement values. Write the answer in simplest form.
for x = 
, y = 
, z = 
A. 
B. 
C. 
D. 
Solve the differential equation.