exam Maths Puzzle Numerical Ability

solve the system of equations:

4x-3y=8
2x+5y=-9

a.(-2,1)

b.(2,0)

c.(0,-83)

d.(1/2,-2)

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exam Other Question

help with this problem please...
0.4z-0.15=0.65-0.3(6-2z) adult tickets for a play cost $5 and children tickets cost $2 for 1 person. 460 tickets were sold. Receipts were $1880. Find # of adult tickets sold. Please help me with this problem!