At the market, 5 light bulbs cost $9. How much do 7 light bulbs cost? $

Find Cost per Bulb: Determine the cost per light bulb. Since 5 light bulbs cost $9, we can find the cost per light bulb by dividing the total cost by the number of light bulbs. Cost per light bulb = Total cost / Number of light bulbs Cost per light bulb = $9 / 5 Cost per light bulb = $1.80Calculate Total Cost: Calculate the cost for 7 light bulbs. Now that we know the cost per light bulb, we can find the total cost for 7 light bulbs by multiplying the cost per light bulb by the number of light bulbs. Total cost for 7 light bulbs = Cost per light bulb × Number of light bulbs Total cost for 7 light bulbs = $1.80 × 7 Total cost for 7 light bulbs = $12.60

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At the market, 5 light bulbs cost
$9.
How much do 7 light bulbs cost?

$

At the market, $5$ light bulbs cost $\$ 9$ . $\newline$ How much do $7$ light bulbs cost? $\newline$ $\$$

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Q. At the market,

5

light bulbs cost

\$ 9

\newline

How much do

7

light bulbs cost?

\newline

\$

Find Cost per Bulb: Determine the cost per light bulb. $\newline$ Since $5$ light bulbs cost $\$9$ , we can find the cost per light bulb by dividing the total cost by the number of light bulbs. $\newline$ Cost per light bulb = $\frac {\text{Total cost}} {\text{Number of light bulbs}}$ $\newline$ Cost per light bulb = $\frac{\$9}{5}$ $\newline$ Cost per light bulb = $\$1.80$
Calculate Total Cost: Calculate the cost for $7$ light bulbs. $\newline$ Now that we know the cost per light bulb, we can find the total cost for $7$ light bulbs by multiplying the cost per light bulb by the number of light bulbs. $\newline$ Total cost for $7$ light bulbs = Cost per light bulb $\times$ Number of light bulbs $\newline$ Total cost for $7$ light bulbs = $\$1.80 \times 7$ $\newline$ Total cost for $7$ light bulbs = $\$12.60$