20% of 6th grade students surveyed said they rode a bike to school. if 50 students said they rode a bike to school,
a: how many total students were surveyed?
b: how many students do not ride a bike to school?

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

Find percent notation for 0.008 0.008=

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)