How do u do cross multiplication

Quincy bought necklaces for $8.00 each. At what price would he need to sell them to make a 25% profit

Is the relation a function? { (14, 9), (15, 8), (8, 7), (1, 9), (15, 2) }

Hey y'all what is 5/7*-14=-22

Real Simple, A Boat traveled 112 miles downstream and back. The trip downstream took 4 hours. The trip back took 8 hours. What is the speed of the boat in still water? What is the speed of the current? An Explanation how would be much appreciated.

Charlotte's garden is 45 square feet what are the dimensions of his garden

Paul is 4 years older than Melissa, who is 26 years older than Eve. Together their ages add to 65. Find out the age of each person.

A cube is dilated by a factor of 2. How many times larger is the volume of the resulting cube than the volume of the original cube?

P + 8 > - 4 can you guys explain this step by step?

Order from least to greatest: 1/2 3/2 2/5 1/3 (A) 3/2 1/2 2/5 1/3 (B) 3/2 1/2 1/3 2/5 (C) 1/3 2/5 1/2 3/2 (D) 2/5 1/2 1/3 3/2

What percent is 248?