In fermi’s method for estimating large numbers, he uses a power of 10 to estimate the upper and lower bound. which answer choice contains powers of 10?
a. 1, 2, 3, 4, …
b. 10, 20, 30, 40, …
c. 10, 100, 1,000, 10,000, …
d. 5, 10, 15, 20, …

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

The pyramid shown has a square base that is 24 centimeters on each side. the slant height is 16 centimeters. what is the lateral surface area?

Find the maximum value of p= 4x + 5y subject to the following constraints :