Lin’s father is paying for a meal that originally costs $20. He has a 30%-off coupon for the meal. After the discount, a 7% sales tax is applied. What does Lin’s father pay for the meal

He pays 15.40$ because the coupon code is 6$ and the sales tax is 1.40$
The calcul is 30/100= 0.30
0.30 x 20 = 6$

20 - 6 = 14$

Use the same method for the taxes expect addition them to the price

A. -10 is the value of x

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )