2x+y=15
y=3x
i think it's substitution

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

Events a and b are independent. the probability of a occurring is 2/5. the probability of b occurring is 1/4. what is p(a and b)?

Thirteen bowlers were asked what their score was on their last game. the scores are shown below 190,150,154,194,181,190,170,151,170,178,161,180 find the range of the bowlers score a.56 b.44 c.34 d.23