You have to know how long it takes them both to solve the puzzles. ;)
Ryan: y=10x+25 Alex: y=11x+20
a) Mr. Smith should choose Alex because the price would be $42 compared to Ryan which would be $45
b) Mr.Smith could choose either Ryan or Alex because they would both charge $75
Answer:
Positive
Step-by-step explanation:
Two positive integers multiplied will always be positive.
3x + 5x = 320
8x = 320
x = 40
3(40) : 5(40) = 120 : 200
The best answer would be Option C.