Allie needs at least 50 hours of community service for social studies class. she already has 20. how many more hours does she need? write an inequality to model this situation.

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

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?

If sin(x) = 0 and cos(x) = 1, what is tan(x)?