Kelly and greta are asked to write an equation for the scenario below. “one person was able to plant 4 trees in the same amount of time that 5 people working together were able to plant 20 trees.” the girls agree that x represents the number of people working and y represents the number of trees planted. kelly wrote the equation , and greta wrote the equation . which person is correct, and why? kelly is correct; each person plants more trees than the person before them. kelly is correct; and . greta is correct; each person plants 4 more trees than the person before them. greta is correct; and .

Greta is correct.

Explanation:

Greta is correct sine you can substitute different number of people for each of the values of and y and check that each person will still plant 4 trees.

For example:

4x = 4(1) = 4 trees; and

4 x 5 = 20

but you should follow a certain pattern to increase the value of x, such that every foe every value of x, one person is able to plant 4 trees.

the final amount you will pay is $68.04.

the tip is determined by the pre-tax amount, so we calculate the tip based on the original bill, not after we've added sales tax.

to find the tip:

we can divide 54.00 by 100 to get 1% of 54. then we multiply that by 18.

54 / 100 = .54

.54 x 18 = 9.72

tip = 9.72$

to find the tax:

we can divide 54.00 by 100 to get 1% of 54. then we can multiply that by 8 to get 8%.

54 / 100 = .54

.54 x 8 = 4.32

tax= 4.32

now we can add the tip and tax to the bill to get our total.

54 + 9.72 + 4.32 = 68.04

total: $68.04

step-by-step explanation: