<span>2x squared - 5
= 2(x)^2 - 5
= 2(4)^2 - 5
= 2(16) - 5
= 32 - 5
= 27</span>
<span>75 miles per hour
miles under miles and hours and hours
</span><span>75 miles -------------->1 hour
</span>30 miles ---------------->?? nhours
cross multiplication
n = 30*1/75 = 0.4 hours = 0.4 x 60= 24 minutes
Let x= second number
x-1= first number
2x= 4(x-1) + 26
2x= 4x -4 + 26
2x -4x= 22
-2x= 22
(-1)(-2x)=22(-1)
2x= -22
x=-11 (second number)
-11-1= -12 (first number)
