8.) which expression is which expression is equivalent to 2.5(4-1) + 4.5(-x-2)? A.) -2x-11.5
B.) -2x + 11.5
C.) -7x - 11.5
d.) -7x + 11.5

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.