Help please i don’t know how to sold this

Sara sells beaded necklaces she makes a profit of 4 dollars pn every neclace she sells which table represents the profit sara makes

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

Hardest math question of all time can you solve the equation. check for extraneous solutions.9∣9-8x∣ = 2x+3