A computer program application developer released a new game app to be downloaded. The table above gives the number downloads, y, for the first four weeks after the launch of the app. If w represents the number of weeks after the launch of the app, which equation best models these data?

A marketing team conducted a study on the use of smartphones. In a certain metropolitan area, there were 1.6 million smartphone users at the end of 2018. The marketing team predicted that the number of smartphone users would increase by 35 percent each year beginning in 2019. If y represents the number of smartphone users in this metropolitan area after x years, then which of the following equations best models the number of smartphone users in this area over time ?

A start-up company opened with 8 employees. The company’s growth plan assumes that 2 new employees will be hired each quarter (every 3 months) for the first 5 years. If an equation is written in the form y = ax + b to represent the number of employees, y, employed by the company x quarters after the company opened, what is the value of b ?

h(t) = − 16t^2 + 110t + 72 The function above models the height h, in feet, of an object above ground t seconds after being launched straight up in the air. What does the number 72 represent in the function?

Xia is charging her laptop. She records the battery charge for the first 30 minutes after she plugs it in to get an idea of when it will be completely charged. The table above shows the results. If y is the percent battery charge on Xia's laptop, which linear equation represents the correct relationship between y and x ?

Adriana used the data from a scatterplot she found on the U.S. Census Bureau's website to determine a regression model showing the relationship between the population in the area where she lived and the number of years, x, after she was born. The result was an exponential growth equation of the form y = x _(0)(1+r ) ^(x). Which of the following does x _(0) most likely represent in the equation ?

Questions 37 and 38 refer to the following information. h(t)=-4.9t^(2)+88.2t When a projectile is launched from ground level, the equation above gives the number of meters in its height, h, after t seconds have elapsed. Q. How many seconds after the projectile is launched will it hit the ground?

h(x)=-16x^2 + 100x+10 The quadratic function above models the height above the ground h, in feet, of a projectile x seconds after it had been launched vertically. If y = h(x) is graphed in the xy-plane, which of the following represents the real-life meaning of the positive x-intercept of the graph?

Once a certain plant begins begins to grow, its height increases at a linear rate. After six weeks, the plant is 54 centimeters tall. Which of the following functions best model the relationship between h(w) the heights in centimeters, of the plant, and w, the number of weeks that the plant has been growing?