The ratio of girls to boys in a boarding school is 2:7,if there are 1251 student in the school, how many of the student are girls​

Which graph corresponds to the function f(x) = x2 + 4x – 1?

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?