Pair of fractions having sum 1

Each paper clip is 7/8 of an inch long and each cost $ 0.03 exactly enough paper clips are laid end to end to have a total length of 56 inches what is the total cost or the paper clips? - I got he answer but I'm not sure it's right

Multiply 16 (20 n+18)

A parabola is defined by the equation x2 = 3/4y. In which direction will the parabola open?

a coin bank that accepts only nickels and dimes contains $9.15. There are 3 more than twice as many nickels there are dimes. How many of each coin are in the bank.

Express 1 1/2% as a decimal.

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.