Which of the followings are the amplitude and the equation of the midline of the curve y = 5 sin(x) + 3 ?
Your
o Amplitude: 3; midline: y = 5
O Amplitude: 5; midline: y = 3
O Amplitude : 10; midline: y = 5
O Amplitude: 5; midline: y = 6

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?