Mrs. Smith opened a checking account with $100. In the first month, she wrote checks for $42 and $35 and deposited $350. How much was in her account after these transactions.

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

Using elimination, what is -4x+2y=-12 4x+8y=-24

Rachel is studying the population of a particular bird species in a national park. she observes every 10th bird of that species that she can find in the park. her conclusion is that the birds living in the park who belong to that species generally feed on insects. rachel's sample is . based on the sample she picked, rachel's generalization is . reset next