exam Maths Puzzle Numerical Ability

4x-5y=20

complete the values

x y
o ?
? 0
-5 ?
? 4

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exam Other Question

Solve the system for x and y: 4(^x+y)=1/64 and sqrt6(^x+8y)=216(^2/3) Solve the inequality.

m + 15 > -4 Here are your choices.

1.) m > 11
2.) m < 11
3.) m > -19
4.) m < -19

Any help would be helpful?