Which statement is true about the given function? f(x) > 0 over the interval (–infinity, 3). f(x) > 0 over the interval (–infinity, infinity). f(x) < 0 over the interval (–infinity, 3). f(x) < 0 over the interval (–infinity, infinity)

Fiona has to plot a histogram of the given data

What rule describes a dilation with a scale factor of 4 and the center of dilation at the origin?

The students at jefferson middle school are raising money for a charity by selling t-shirts and hats. the number of t-shirts sold was 3 times the number of hats. the profit was $5 for each t-shirt sold and $2.50 for each hat sold. the students raised $840 for the charity. they used the system below to analyze their success and found the solution to be (144, 48). 5x+2.50y=840 x=3y how much did they earn from t-shirt sales?