Which expressions are equivalent to the one below? check all that apply. 21^x/7x a. 3^x-7 b. 3 c. 3^x d. (21-7)^x e. 7^x * 3^x/ 7^x f. (21/7)^x

What is the ratio of the change in y-values to the change in x-values for this function? a) 1: 13 b) 2: 5 c) 5: 2 d) 13: 1

What is the measure of the smallest angle in the diagram? 15 29 32 45

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?