30. Since he can ride the bike 6 miles in 20 mins, and 100 divided by 20 is 5, the answer would be given to you by multiplying 5x6, which is 30. So he can travel 30 miles in 100 minutes.
Answer:

Step-by-step explanation:
log(x) is the inverse function of an exponent. "log base 8 of xyz" means "what number do I have to raise 8 to, to get xyz". In this case, it means, "what number do I have to raise 8 to, to get x + 1". That's simple, it's just x + 1!
(2x+5)(5x+1) is completley factored
Answer:
a. 990 b. 243 c. 693
Step-by-step explanation:
a. 1,800 * 0.55 = 990
b. 1,800 * 0.45 = 810
810 * 0.3 = 243 pretzels
c. 1,800 * 0.55 = 990
990 * 0.7 = 693 croissants