Which of the following is equivalent to 7-2(x+2)< -4-3(1-x)?

a: -5x< -10
b: -x< -16
c: -2x< 17
d: 6x< -9

The trigonometric ratios sine and secant are reciprocals of each other

If there is 20 dogs in the shelter and 5 dogs get homes, and then 43 more dogs come. how many dogs are there in the shelter?

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?