What is the value of the expression if x = -7 and y = -3 2x - 2+y
there is a little 2 above 2x I just didn't know how to put it up there

A. 108
B. 75
C. 21
D. 93

What is the percent of increase for a population that changed from 438,000 to 561,000

Is the square root of 4 plus the square root of 16 rational?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling