Answer: C
Y=90+6x/x
90 new tools + 6 dollars (x) over x dollars
In the half-angle formula for sine and cosine, notice that a plus/minus sign appears in front of each radical (square root). Whether your answer is positive or negative depends on which quadrant the new angle (the half angle) is in
1 gallon = 4 quarts
2570 x 4 = 10,280 quarts of gas
10280/7 = 1468.571 quarts per day
rounded to nearest hundredth is 1468.57 quarts
I believe it is y= -x + 4
I believe the answer is A "If a triangle is equilateral, then it has three congruent angles". Hope this helps!