7less than -2 times a number x is greater than or equal to 41. i was supposed to write an inequality, which i did: -9x≥41 i am supposed to find the solution set of the inequality. could i get some with this? !

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

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.