Solve the simultaneous equations
4x + 2y = 8
2x - 5y = 10

y =
x=

The axis of symmetry for the graph of the function f(x)=1/4^2+bx +10 is x=6. what is the value of b?

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Solve the given system of equations. 2y= -x+9 , 3x-6= -15