PLEASE HELP!! can someone please explain what i did wrong?

The system of equations graphed below has how many solutions? y = 2x + 2

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7