What is the unit rate for 501.9 mi in 21 h?
As a decimal

i think that you should ask google for the answer to that problem because if we don't know it google does

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this

i those same problems in math and dont know how to do them

h * s * a

h = history teacher

s = science teacher

a =   art teacher.

i see no data table, but just multiply the number of history teachers, science teachers, and art teachers.