Homeowners want to create a circular rock garden of 20 feet in diameter. reference materials state that the space for the garden needs to be 3" deep. the rocks they wish to buy cost $80 per cubic yard and must be purchased in whole cubic yards. how much will they have to spend on rocks?

ok

step-by-step explanation:

the ratio of balloons to tables is 5: 2 and the constant variation is 5.

the equation is y=5x

the answer is:

the correct option:

b.

to solve the problem, we need to remember how to operate to simplify exponential expressions using the logarithms.

we are given the equation:

then, using placing logarith with base 7 on both sides of the equation, we have:

so, rounding the obtained result to two decimal places (nearest hundreth), we have:

hence, we have that the correct option:

b.

have a nice day!