What is 7.8 x 10^-3 in scientific notations

When the movie is half over, popcorn sells for half price. Full price popcorn is $3.50, and drinks are $1.35. Determine the cost for purchasing 3 orders of popcorn and 3 drinks when the movie is half over. $

1,352:{[ (81*7) - 12]*6} solve?

Factor completely 25x^2-36

Given the sequence 2, 6, 18, 54, ..., which expression shown would give the fifteenth term? 215 2·315 2·314

Fred bicycles 6 km/h slower than Samantha. In the time it takes Fred to bicycle 39 km, Samantha travels 57 km. How fast does Fred bicycle? O A. 26 km/h OB. 13 km/h O c. 7 km/h OD. 19 km/h

Answer these questions for the poset ({2, 4, 6, 9, 12, 18, 27, 36, 48, 60, 72}, |). a) Find the maximal elements. b) Find the minimal elements. c) Is there a greatest element? d) Is there a least element? e) Find all upper bounds of {2, 9}.

There are 52 blades of grass in 2 in^2 of lawn. there are 580 blades of grass in 8 in^2 of the same lawn. which equation models the y blades of grass found in x in^2 of lawn? A) y=-88x-124 B) y=-88x+124 C) y=88x-124 D) y=88x+24

Given the following scenario, decide if it is a permutation or combination, and then calculate the possibilities. Papa John's pizza has 17 different toppings to choose from. In how many ways can you make a three topping pizza?

A rectangle is 1 unit long. The rectangle is also 2 units wide. what is its perimeter?

10, 18, 4, 15,3,21, x if x is the median of the 7 numbers listed above which of the following could be the value of x?