Leena is saving to take a dance class that costs $250, So far, she has saved $180 and is saving $7 each week. How many weeks it will take her to have enough money for the dance class? Part A: Define the variable
Part B: Write and solve an equation
Part C; Interpret the solution

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample