I just need help with the answers!​

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?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

During a wright loss challenge your friend goes from 125 pounds to 100 pounds.what was the percent weight loss