We have x tables and y chairs available for prom. If we put 12 chairs at each table there will be 4 extra chairs with no table.
If we put 14 chairs at each table, one whole table will be empty and another will only have 6 chairs.
How many available tables and chairs do we have available for the prom.
Show calculations please i really need it.

5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?

Put the equation in slope intercept form by solving for y

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered