400 reduced by 3 times my age is 199 what is my age

Which of the following are solutions to the equation below 2x^2+6x=20

What is 3 (x-7x) - y and how do you do it?

A major stadium has 45,000 seats. fans bought 5/8 of the seats. how many seats are left?

It will take an hour for plane A to meet plane B which is flying in the opposite direction. If, in 45 minutes, the distance between them will be 200 miles, how far apart are they now?

Is - 6 a rational or irrational number?

What is the greatest common factor of 12u^5v^2x^6 and 20u^3v^8

The slope of the line - 3,3

according to the rule of 72 if Beth invest $200 and $1300 into two separate accounts with the same interest rate which amount will double faster

A company advertises that there are an average of 25 grams of potato chips in each bag of chips. A consumer group has collected a sample and wants to perform a test to see if the company is providing less than it advertises.

Which expression have a vaule of - 1/64?