Please help me Permutations and combinations question

how many ways can a 4 person curling team be selected from 8 boys and 6 girls, if there must be an even number of boys and girls on the team?

Select all the correct answers. natalie buys a new car. in the first month, the odometer on the car records 800 miles. from past experience, she expects to drive 900 miles per monthselect all the functions that can be used to find the number of miles, f(n), recorded on the odometer after n months. of(n) = 800n + 100f(n) = 9001 - 100f(n) = 900n + 800(1) = 800; }(n) = f(n - 1) + 900, for n > 2f(1) = 800; 1(n) = f(n − 1) + 100, for n > 2(1) = 900; }(n) = f(n - 1) + 800, for n > 2

Find the cosine function that is represented in the graph.

Atemperature of 1.64◦f corresponds to answer in units of ◦c.