13. how many solutions does this equation have: 8d-10=4(2d-6)?

14. summer wants to earn at least $500 for the cheerleading team. she plans to sell candy grams, c for $3.50 each. what is the fewest number of candy grams she can sell?

15. what is the value of c for: 14c-10=20?

16. jayda is going bowling. the company charges $3.00 to rent the shoes and $1.50 for each game, g bowled. what equation represents the total cost, c, of playing g, number of games?