How do i make the following into an algebraic equation? george earned a total of $900 this week. this total was $20 less than four times the amount he earned last week. how much did george make?

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?

What is the slope of the equation y =