9: p is anything less than or equal to 21
A word problem can be, 'Pat's airplane ran out of fuel and can only glide 21 more miles. Write an equality that describes the situation, if the plane can glide p miles'
10)
>= means the greater than or equal sign
use the equation (91+95+88+x)/4>=90
solve it with equal to get the lease score
(274+x)/4=90
274+x=360
x=86
