The amount of gravel and the area it covers are examples of ratios.
A weight of 7 lb can cover 1 square foot, while 315 lb can cover an area of 45 square feet.
The relevant parameters are:

To find the number of pounds needed for 1 square foot , perform the following calculation:

Thus, we have:


Cross multiply

And divide both sides by 36

The area that 315 lb of gravel can cover is calculated as follows:
So, we have:


Cross multiply


And divide both sides by 252

Thus, 7 lb will cover
1 square foot
, and 315 lb will encompass an area of
45 square feet.
Read more about ratios at:
Answer:
For the first year, the total amount comes to $266, and with an hourly wage of $5.50, you can express this as the equation 5.50x=266
Step-by-step explanation:
Answer:
Indeed, the equation is solvable by factoring. By applying the given equation, you can take the square root of both sides. Since both 169 and 9 are perfect squares, the left-hand side simplifies to plus or minus 13/3, producing rational results. Adding 6 to 13/3 yields a rational number while subtracting it does too. Thus, a quadratic equation is factorable if its solutions are rational.