Spaceship model kits originally cost d dollars online. You can buy each kit on sale for 30% of the original price, plus’s shipping fee of $3.50 per kit. After assembly, you sell each model online for (2.5d+5) dollars. What is your profit on each model spaceship sold?

Asquare is dilated by a scale factor of 1.25 to create a new square. how does the area of the new square compare with the area of the original square? a)the area of the new square is 1.25 times the area of the original square. b)the area of the new square is 2.50 times the area of the original square. c)the area of the new square is 1.252 times the area of the original square. d)the area of the new square is 1.253 times the area of the original square.

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

What is the solution of log2  (3x  -  7)  =  3? 4 5