PLEASE HELP ! The total cost after tax to repair Kimber's cracked phone screen is represented by 0.04(30h)+30h where h represent
s the number of hours it takes to repair Kimber's phone. What part of the expression represents the amount of tax she must pay? EXPLAIN YOUR ANSWER IN COMPLETE SENTENCES! thank you
Answer: The term 0.040(30h) represents the amount of tax she must pay.
Explanation:
The functin 0.04(30h) + 30h, has two terms; the second term, 30h, represents cost due to h hours at at unit of 30, and the first term 0.04(30h) is the additional amount due to the taxes over h hours at the unit rate of 30.
When you add a tax rate of 4% to 30h, you get the the amount of taxes over the 30h.
The calcualtion is: (4/100)×(30h) = 0.04(30h). Hence, you conclude that 0.04(30h) is the amount of tax she must pay.
So first, let's get rid of the parentheses. We can multiply it out to get . We know that the square root of 16 is ±4, so now our equation is ±4 - =11. I'm guessing since the problem only has one solution it's most likely only positive 4, so let's revise our equation to 4 - =11. We can use inverse operations to make the a little easier to solve: -7= . We divide both sides by to get , which we can rationalize (remove the square root from the denominator so that it's a proper answer) by multiplying by (which is equal to one so we can use it) which is equal to . Let's finish this by simplifying it. (2x). We can simplify it further by simplifying the 2, making it .
Hope this wasn't too confusing! I'll answer any questions.