Use a graphical method to solve the system. Give x- and y-coordinates correct to the nearest hundredth.y = 3-xy = - 
A. (1, 3)
B. ?
C. (-1, 3)
D. (1, -3)
Answer: C
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Simplify.
? 
- 5
A. -22
B. 6 - 25
C. -2
D. 9 - 25
In a laboratory experiment, two separate foods are given to experimental animals. Each food contains essential ingredients, A and B, for which the animals have a minimum requirement, and each food also has an ingredient C, which can be harmful to the animals. The table below summarizes this information. ? Food 1 Food 2 Required Ingredient A 9 units/g 4 units/g 22 units Ingredient B 7 units/g 14 units/g 28 units Ingredient C 2 units/g 1 unit/g ?? How many grams of foods 1 and 2 will satisfy the requirements for A and B and minimize the amount of ingredient C that is ingested? Also what is the minimum amount of ingredient C ingested? ??
A. ?1 gram0 of food 1 and 2 grams of food 2 satisfy the minimum requirements forAandBwhile minimizing the amount of ingredient C to 5 grams. B. ?2 grams of food 1 and 1 gram0 of food 2 satisfy the minimum requirements for A and B while minimizing the amount of ingredient C to 5 grams. C. ?2 grams of food 1 and 2 grams of food 2 satisfy the minimum requirements for A and B while minimizing the amount of ingredient C to 6 grams. D. ?3 grams of food 1 and 1 gram0 of food 2 satisfy the minimum requirements for A and B while minimizing the amount of ingredient C to 7 grams. E. ?3 grams of food 1 and 2 grams of food 2 satisfy the minimum requirements for A and B while minimizing the amount of ingredient C to 8 grams.
Factor.8m(9 - m) + 9n(9 - m)
A. (8m + 9n)(9 - m) B. (8m - 9n)(9 - m) C. m(8 + 9n)(9 - 1) D. No common factor
Perform the addition or subtraction and write the result in standard form.
?
?
A. ?
B. ?
C. 
D. 
E. 