Equations and Inequalities

Evaluate. 4x-6y when x=5 and y=-3

• 2

• 38

• -42

• -10

Evaluate. 3x2-9y when x=2 and y=4

• -24

• -30

• 30

• -6

Simplify. 5n+10-8n+6

• 3n+16

• -3n-16

• -3n+16

• 3n-16

Simplify. 10m-4(3m+7)+6m

• -4m-28

• -4m+28

• 4m+28

• 4m-28

Simplify. 11+q-3q2+18q2-2

• 15q²+q+9

• 15q²+q-9

• 15q^2-q+9

• 15q^2-q-9

Simplify. 5(x-3y)+2(4y-x)

• 3x+7y

• 3x-7y

• -3x-7y

• -3x+7y

Solve. 5n+11=-9

• n=2/5

• n=4

• n=-4

• n=5/2

Solve. 6k+7=4+12k

• k=-1/2

• k=2

• k=-2

• k=1/2

Solve. -t-2=9(t-8)

• t=7

• t=9

• t=-9

• t=-7

Solve for y. 12x-28y=40

• y=3/7x+10/7

• y=3/7x-10/7

• y=-3/7x +10/7

• y=-3/7x -10/7