Which equation is equivalent to x + 8 = 21? O
A. (X + 8) x 4 = 21
O B. (X + 8) x 4 = 21 - 4
O C. (X + 8) * 4 = 21 x 2
D. (X + 8) x 4 = 21 x 4

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

To decrease an amount by 16% what single multiplier would you use

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?