Solving algebraic equations grade 8

Solve the following equation by inspection:

3b+5=17

• b=12

• b=22/3

• b=4

• b=-4

Solve the following equation by inspection:

y+2=-3

• y=-5

• y=-1

• y=5

• y=1

Solve for b:

3(2b+1)+1=5b+5

• b=-1

• b=5

• b=1

• b=-3

2a+2b = 2ab

• True

• False

Solve for x:

2(3^x) = 18

• x = 2

• x = 3

• x = 3

• impossible to solve

Determine the value of y:

5^y(5^y+2) = 25

• y=1

• y=0

• y=2

• y=3

Solve for w:

(3w+7)/2 = 5

• w = -1

• w=0

• w=3

• w=1

3a²+7a-5=1 is an example of a / an

• expression

• formula

• quadratic equation

• linear equation

If an athlete runs the 100m in 11.2 seconds we are able to calculate the speed at which he ran. The equation we use to calculate the speed is called a / an:

• expression

• formula

• quadratic equation

• variable

Determine the value of t:

2t/5+6=-3

• t=-3

• t=45

• t=-45/2

• t=-45