Evaluate each geometric

series described

3 + 6 + 12 + 24 n=7

how many of the first 80 positive integers can he written as the sum of two distinct powers of 3? for example, 28=27+1=3^3+3^0 can be expressed, but 29 cannot be.

D (n) = 6-4 (n-1) whats the 5th term in the sequence

Graph by inequality x+4y=2

If DC = 6x and DA = 4x+18, find the value of x. Then find AD and DC

Which of the following is not a possible r-value - 0.3 - 1.6 0.8 0.3

The sum of two numbers is 28. The first number is 7 more than twice the second number. Let a represent the first number. Let b represent the second number. What is the second number? Use the table to guess and check.

The value of y varies directly with x, and y = 4 when x = 10. find y when x = 1. a.-2.5 b. 2.5 c. 0.4 d.-0.4

Multiply. (Examples 1-5) 1. 8 (-12) =

A large university is interested in learning about the average time it takes students to drive to campus. The university sampled 20 students and asked each to provide the amount of time they spent traveling to campus.

Maya earns 72 dollars for working 5 hours. How long will it take for her to earn 216 dollars at the same pay rate?