8n - (4n+7) = 17 how do I solve

The ratio of Michael and Neil's ages is 7:6. If Neil is really 42 years old, how old is Michael?

Which rate is equivalent to 11/66?

What is the value of x? x+58=6x+58=6 Enter your answer in the box in simplest form. x =

What is the opposite of 4?

A car dealer paid a certain a price for a car and marked it up by 7/5 of the price. Later, he sold it for$24.000. What is the original price.

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.