exam Maths Puzzle Numerical Ability

Need the steps to solve the following equation.
3x+1 + x-5

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exam Other Question

Rational and Radical Expressions

3) Divide and simplify:

5x-7 � 25x�-49
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5x� +27x+28
thank you so much Bob owns a car wash and pays his employees either $5 plus 2% commission or $3 plus 4% commission. How much would sales have to be for the pay to be equal?

I got:
y= 5+.02x
y= 3+.04x

Not sure what x=?

Can you help?