Answer:
8.26 x 10^6
Step-by-step explanation:
Scientific notation mean multiply by 10 power
Yes they are both like terms so if they are in the same equation you can just add them together.
To answer this question you would have two steps involved. The first step would be to find the percentage of $42 that gives us $2.94. Set up an equation 42x=2.94. Divide both sides by 42 to get the decimal 0.07. This equal 7%. Take this percentage multiplied by the $58. You need to change the 7% into 0.07 to be able to calculate it. 0.07 x 58 = $4.06 sales tax.