The graph below shows the heights and arm spans of students in a classroom. height and arm span of students based on the graph, which is the best prediction of the height of a student with an arm span of 143 cm?

143 cm

Step-by-step explanation:

Using the graph attached, it follows that the arm span is directly proportional to the height of students. Evidently, when the height is 160 the arm span is also 160, other values follow the same order such as 180. Marking at the point when arm span is 143 from the graph, the point coincides with height of 143 cm. Therefore, the height is 143 cm

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: