Adam bought 2 mechanical pencils and 8 spiral notebooks for school and it cost him $13. Kia spent $12.50 on 3 mechanical pencils and 5 spiral notebooks. Let p = the cost of a mechanical pencil.

Let n = the cost of a spiral notebook.

Write a system of equations that can be used to determine the cost of a mechanical pencil and the cost of a spiral notebook. Drag the numbers to create the system of linear equations.

.bjbjk.b,j.l.

step-by-step explanation:

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.

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock