U r going to subtract 3 from each side of the equation....leaving you with :
x^2 + 2x = -3
91 is 130% of what number...
91 = 1.3x
91 / 1.3 = x
70 = x
so 91 is 130% of 70 <==
13 miles per hour means he will cover 13 miles in 1 hour.
therefore in 2 hours, 26 miles. 3 hours, 39 miles. 4 hours, 52 miles.
Or time = distance/speed
time = 52/13 = 4 hours
X+25=60x=60-25,x=35. Hope this helped
= 204800. 204800 / 
= 800.