The coordinate plane shows the graphs of two exponen functions which equation is true?

Which of the following graphs represents the function f(x) = 2^x

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class