Terrance used this expression to find the final price, in dollars, of a hat that is discounted 30% off the original price of $20. 20 - (20 x 0.3)
Which of the following is an equivalent expression?
20 - 0.7
0.3 (20)
20 -0.3
0.7 (20)

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?