I really need help with these work/power problems

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?

What expression is equivalent to log3(x+4)

Write the pair of fractions as a pair of fractions with a common denominator