Ayala biked 12.76 miles on sunday, 3.45 miles on monday, and 6.52 miles on tuesday. over those three days, about how many miles did she bike in all? estimate the answer by rounding to the nearest whole number.
21 miles
22.73 miles
22.9 miles
23 miles

The system of equations graphed below has how many solutions? y = 2x + 2

David must install fencing around a lot that is shaped like a right angle. the side of lot that runs east-west is 200 ft long. the side of the lot runs north-south is 125 ft long. calculate how many feet of fencing he will need to surround the entire lot.

Find the value of x for which line a is parallel to line b