Answer:
Top right answer
Step-by-step explanation:
He added the -x to 4x when he should have subtracted.
Answer:
He will spend less than or equal to $9
Step-by-step explanation:
21 + c </= 30
c</= 9
When you multiply or divide a whole number by a power of ten just add the zeros. 5 to the 100000 power is 500000. Five zeros. Hope this helps. Just a little trick and pattern I noticed which helps. :)
Let's use x as the number of questions she answered correctly. If we make an equation of out the question, it would be 8.7x+13=108.7 To solve the equation subtract 13 from both sides. So it will leave you with 8.7x=108.7-13, which is 8.7x=95.7. Divide both sides by 8.7, which will give you x=11. She answered 11 questions correctly.
The equations are the same!
Let's get the first equation into proper y = mx + b form.
Subtract 6x from both sides to get -2y = - 6x + 16.
Then divide by -2 to get y = 3x - 8.
I hope I've helped!
:D®
