If the base linear function is F(x) =-3x and 5 is added to the equation, then what best describes what happened to the base equation?  A. nothing happened stayed the same

B. The base equation shifts up five units

C. The base equation shifts to the left five units

D. The base equation shifts down five units

E. The base equation shifts to the right to five units

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?