Question 4 robert is ordering a pair of boots that cost $59.99. if the sales tax is 7% and the shipping is $9.99, what is the total cost? $59.99 $66.99 $74.18 $69.27 question 5 tina is ordering a pair of shoes that cost $123.99. if the sales tax is 8% and the shipping is $19.99, what is the total cost? $155.50 $143.98 $153.90 $133.91

Answer of 4

Find out the  what is the total cost .

To prove

As given

Robert is ordering a pair of boots that cost $59.99.

If the sales tax is 7% .

7% is written in the decimal form

= 0.07

Sales tax cost = 0.07 × 59.99

                       = $ 4.2 (Approx)

The shipping is $9.99

Total cost = Cost of pair of boots + Sales tax + Shipping charges

                = 59.99 +  4.2 + 9.99

                = $74.18 (Approx)

Therefore the cost of the pair of shoes are $ 74.18 (Approx) .

Answer of 5

Find out the  what is the total cost .

To prove

Tina is ordering a pair of shoes that cost $123.99.

If the sales tax is 8% .

8% is written in the decimal form.

= 0.08

Sales tax cost = 0.08 × 123.99

                       = $ 9.92 (Approx)

The shipping is $19.99

Total cost of the shoes = Cost of pair of shoes + Sales tax + Shipping charges

                                      = 123.99 + 9.92 + 19.99

                                      = $153.9

Therefore the cost of the pair of shoes are  $153.9 .

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."