Solve the problem.The local clothing store marks up the price that it pays to the clothing manufacturer by 48%. If the selling price of a pair of jeans is $126, how much did the clothing store pay for the jeans?
A. $186.48
B. $85.14
C. $242.31
D. $21.72
Answer: B
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Use the two steps for solving a linear programming problem to 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. 
sack of soybeans and 
sack of alfalfa
B. 
sacks of soybeans and 
sacks of alfalfa
C. 2 sacks of soybeans and 0 sacks of alfalfa
D. 0 sacks of soybeans and 2 sacks of alfalfa
Write the logarithmic equation in exponential form.log100 = -10
A. 10-10 = 0 B. 010 = -10 C. -1010 = 0 D. 0-10 = 10
Evaluate the expression.(53)
A. 20 B. 1 C. 10 D. 5
Solve the problem.Suppose the lengths of the sides of a triangle are a, b, and c as illustrated in the figure. 
If the semiperimeter of the triangle is s = 
(a + b + c), then the area of the triangle is A = 
.Find the area of the triangle with sides a = 20, b = 44, and c = 56. Give the exact answer and then the answer rounded to the nearest hundredth.
A. 160
sq units, 391.92 sq units
B. 80
sq units, 195.96 sq units
C. 40
sq units, 97.98 sq units
D. 320
sq units, 554.26 sq units