Subtract 5r - 2 from -3r + 4

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?

Tatiana reads 40 pages of her book every night for x number of nights. write an expression that shows the number of pages she has read