Write 50,000 +20,000+ 300 + 2 in standard form

The sum of the product of 4 and x and the product of 7 and y is 61. the sum of the product of 12 and x and the product of 21 and y is 61. what are the values of x and y?

225/100 of last years cost. write each fraction as a decimal and as a percent

Aculture started with 3000 bacteria. after 5 hours it grew to 3900 bacteria. predict how many bacteria will be present after 9 hours