Liam is setting up folding chairs for a meeting. If he arranges the chairs in 9 rows of the same length, he has 5 chairs left over. If he arranges the chairs in 7 rows of that same length, he has 15 left over. How many chairs does Liam have?

answer: its the third option.

step-by-step explanation:

i just took the test.

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.

abby has a greater debt becasue she owea 5 more then alan does