Which expression is equivalent to x - 13 = 16? A. ( x - 13 ) + 13 = 16
B. ( x - 13 ) * 13 = 16 / 13
C. ( x - 13 ) + 13 = 16 + 13
D. ( x - 13 ) + 5 = 16 * 5

P. S * = multiplication sign
/ = division sign

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

The oates family went out for dinner the price of the meal was $33.95 the sales tax was 7.25% of the price of the meal . the tip was 15% of the meal and the sales tax . how much money did the oates family pay for the meal, including tax and tip

This size running track is usually called a 400 meter track. however if a person ran as close to the inside as possible on the track they would run less than 400 meters in one lap. how far away from the inside border would someone have to run to make one lap equal exactly 400 meters