Which answer represents the series in sigma notation?

1 + 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/64

7

A. ∑ 2^j-1

j=1

7

B. ∑ 1/2 (j+1)

j=1

7

C. ∑ 1/2 ^j-1

j=1

7

D. ∑ 1/2j+1

j=1

Two workers are each going to sew buttons on 10 shirts. How many buttons will they need in total?

Multiply (x-3) by (x+4)

8 div by 275 place 0 in qoutient

What is 2.888888 as a fraction?

A cable service provider charges $40 per month for its basic package plus an additional $5.35 for each premium channel chosen. The average cost for cable per additional channel is given by the expression 5.

the beach shop sold 12 skim boards on saturday and 9 on sunday. What is the percent of decrease from saturday to sunday?

1. What's the area of the above figure, which has sides of length 6 and 8? A. 28 B. 42 C. 14 D. 48

Julian spends 85 min on HW each day. If 20% of the time is spent on math HW, how many minutes a day is Julian spending on math HW?

Which expression is equivalent to 1/2 (2n + 6) ?

In a rectangle, how do you determine what is length and what is width?