The customers of Rhythm Time, an online music service, downloaded 3,790 songs last year. This year, the number was 20% higher. How many songs did they download this year?

7x+8y=-18, 4x-9y=-3 solve the system of equations

Which mathematical statements are true? 1) if 3 is an odd number, then 3 times 3 is an even number. 2) if 6 is less than 7, then 4 is greater than 7. 3) six is divisible by 3, and 10 is a multiple of 2. 4) the average of the data is greater than the largest value in the data, or it’s less than the largest value in the data. 5) the slope of a linear graph is its rate of change, and the graph’s y-intercept is the initial value. 6) if an equilateral triangle has equal angles, then all its angles will measure 45°.

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?