Scenario A – In a famous study that began in 1948, a sample population in Framingham, Massachusetts, was selected and followed through the course of their lives. They were periodically tested to see if they had developed one of several types of heart disease. Scenario B – In a study of pregnant women, researchers reviewed medical histories and found that women who were diagnosed with gestational breast cancer were more likely to have their labor induced preterm than pregnant women who were not diagnosed. Complete the sentences by selecting the correct study type.

Amanda went into the grocery business starting with five stores. after one year, she opened two more stores. after two years, she opened two more stores than the previous year. if amanda expands her grocery business following the same pattern, which of the following graphs represents the number of stores she will own over time?

The federal reserve controls certain interest rates in the united states. investors often try to speculate as to whether the federal reserve will raise or lower rates and by how much. suppose a company conducts extensive interviews with financial analysts, and as a result, predicts that "thefed" will increase rates by an average of 0.25 percentage points every six months for the forseeable future. which type of equation could be used to model the predicted interest rates over the next several years, assuming no other significant changes? a) a linear equation b) a quadratic equation c) a polynomial equation d) an exponential equation

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13