Find the solution set for the given inequality if the replacement set is {3,4,5,6,7} 3x + 1 _< 16 btw, the < goes on top of the _ ( pl)

I'm confused on this could anyone me and show me what i need to do to solve it.

Jude is making cement for a driveway. the instructions show the amount of each ingredient to make 1 batch of cement. complete each statement to adjust the ingredients for each new situation if jude uses these instructions.

In right triangle xyz, the right angle is located at vertex y. the length of line segment xy is 12.4 cm. the length of line segment yz is 15.1 cm. which is the approximate measure of angle yzx? 34.8° 39.4° 50.6° 55.2°