During the first two hours of a 4-h trip, the force of the wind causes a sailboat to travel 68 km. During the next two hours, the wind speed changes. The boat sails 3 km in the next hour and 25 km in the last hour. What was the boat’s AVERAGE speed?

Mindy bought 5/8 pound of almonds and a 3/4 pound of walnuts. which pair of fraction cannot be used to find how many pounds of nuts she bought in all.

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

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