15x-20x+25x*20=15-25x

a boat travels x miles per hour upstream on the mississippi river. The trip takes 3 hours. On the return trip, the boat travels 2 miles per hour faster. The trip takes 2.5 hours. How far does the boat travel upstream?

A movie rental website charges $5.00 per month for membership and $1.25 per movie. Marisa has $18.50 this month to spend on movie rentals. How many movies can she view this month? She thinks she can afford 11 movies in 1 month.

The cost to ski is $24 times the number of hours you ski

The number of blocks has 9 in the ones place, the number in the hundreds is one more than the tenths those two are 11. how many blocks are there?

What is the rate and ratio of 420 miles in 7 hours

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.