Solve for 2:
2(x - 5) + 7 = 53
O2 = 25.5
O2= 28
O2 = 31.5
O2 = 25

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

The cost of a taxi ride includes an initial charge of $2.00. if a 5km ride cost $6.00 and a 10km ride cost $10.00, determine the cost of a 15km ride.

What are the solutions of the following system? y=-2x^2 y=x-2