Hannah received $30 for her birthday and bought 3 shirts that were all the same price. if she had $9 left over, which equation shows how to determine how much each shirt cost? a.3x = 39 b.3x = 30 c. x + 9 = 30 d.3x + 9 = 30

He amount of carbon-14 present in animal bones t years after the animal's death is given by p(t)equals=upper p 0 e superscript negative 0.00012097 tp0e−0.00012097t. how old is an ivory tusk that has lost 26% of its carbon-14?

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

Me n o w. i need t h i s. 10 points