The cost for 7 dance lessons is $82. the cost for 11 is $122. write a linear equations to find the total cost c for l dance lessons. how much for 4 lessons?

Awrestling tournament begins with 128 competitors. in the first round, each competitor has 1 match against another wrestler. the winner of each match moves on to the next round until there is a winner. write a sequence in which the terms represent the number of players still in the tournament at the end of each round. describe the sequence? how many rounds are in the tournament?

Student price tickets to a movie are $1 and non student tickets are $2 . 350 tickets are sold and the total amount made is $450. there were 250 student tickets sold . true or false .

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i