I think it is -8. Subsitute the value. 2(-8) +1=-15 which is less than 0. When you plug -8 for x^2 -1 you get 64-1 which is 63. 63 is offcourse greater than 0.
For this case, we propose a rule of three, since with \ frac {2} {3} of gallons it covers 3% of wall, then:
gallon --------> 3%
1 gallon -----------------------> x
Where the variable "x" represents what percentage of wall can be painted with 1 gallon of paint. So:
Thus, with 1 gallon of paint 4.5% of wall are painted.
Answer:
4.5%
Answer:thanks much xoxo hablo no engles
Step-by-step explanation:
Hello there,
Your a correct answer would be 37
My explanation: So what I did was 4*2*5 which got
me 37.
Hope this helps
~HotTwizzlers