Seventy tickets were sold for a concert at $510. Each adult ticket cost $9 and each children's ticket cost $5. Be x the entrance fee for adults and be y the entrance fee for children.

a) Write down the system of equations that represents the problem:

i dont know sorry

step-by-step explanation:

need more info

step-by-step explanation:

what do you mean by "representation"? graph? table? etc.

hello,

as we don't know if g(x) is continue,

answer b

f(x)=2x²-8x+1=2(x²-4x+4)+1-8=2(x-2)²-7

vertex is (2,-7) ( a minimum since coefficient of x² is > 0)

true

step-by-step explanation:

intersecting chords are just lines that intersect. so a line is equal to 180 degrees, so when it is intersected by another chord, then it create supplementary angles, and because the lines cross, vertical angels are also formed.