HURRY!
Consider the system of equations and the partial solution below.

6 x + 3 y = 9. 5 x + 4 y = 10.

Multiply the first equation by –4.
Multiply the second equation by 3.
Add the resulting system of equations.

Which terms will cancel when you add the resulting system of equations?
Negative 36 and 36
Negative 24 x and 24 x
Negative 15 x and 15 x
Negative 12 y and 12 y

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Afurniture manufacturer produces chairs and sofas. each chair requires 10 yards of fabric, and each sofa requires 20 yards of fabric. the manufacturer has 300 yards of fabric available. to fulfill orders, the number of sofas must be at least twice the number of chairs. let x be the number of chairs and y the number of sofas. which inequalities are described in the problem? check all of the boxes that apply

Which of these is and example of a literal equation? a) 6+30=6^2 b)3x-4y c)12=9+3x d)ax-by=k