Answer:
Step-by-step explanation:
x = number of rows
780=x(x+4)


there are 26 rows and 30 students in each row 26*30=780
So,
Mark wants $100 for 10 hrs., or $10/hr.
Rick wants $80 for 9 hrs., or

$8.89/hr.
Steve wants $75 for 8 hrs., or $

/hr. or $9.38/hr.
Finally, Andy wants $60 for 5 hrs., or $12/hr.
We can see that <u>Rick</u> offers the best deal, at $8.89/hr.
Answer: 1.5(b)+ 2.25(s) = 10.05
Step-by-step explanation:
C. A chord because a chord is a line segment with 2 end points