Use algebraic and/or graphical methods to solve the inequality.7x5 < 70x3
A. x < -
or x > 
B. x < -
or 0 < x < 
C. -
< x < 
D. -10 < x < 0 or 0 < x < 10
Answer: B
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Solve and check the equation. Begin your work by rewriting the equation without fractions.
- 
= 
A. {7}
B. {-4}
C. {4}
D. 
Solve the system of equations using Cramer's Rule, if applicable.
A. 
B. ?
C. 
D. 
Find the sum or difference, and write in lowest terms, if necessary.
+ 
A. 
B. 
C. 
D. 
Solve the problem.Suppose an animal feed to be mixed from soybean meal and oats must contain at least 100 lb of protein, 20 lb of fat, and 12 lb of mineral ash. Each 100-lb sack of soybean meal costs $20 and contains 50 lb of protein, 10 lb of fat, and 8 lb of mineral ash. Each 100-lb sack of alfalfa costs $11 and contains 30 lb of protein, 8 lb of fat, and 3 lb of mineral ash. How many sacks of each should be used to satisfy the minimum requirements at minimum cost?
A. 2 sacks of soybeans and 0 sacks of alfalfa
B. 
sacks of soybeans and 
sacks of alfalfa
C. 0 sacks of soybeans and 2 sacks of alfalfa
D. 
sack of soybeans and 
sack of alfalfa