Find the sum of the first 7 terms of the following sequence. Round to the nearest hundredth if necessary.
4
5,
-2,
5
Sum of a finite geometric series:
0 1
ajan
Sn
1 - 1

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

What is the value of x in the following equation? -3x-2=2x+8

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?