Find the sum of the first 45 terms in this geometric series: -0.5 + 1.5 -4.5 ...−0.5+1.5−4.5...

Eric drew a scale drawing of a country park. the scale he used was 1 inch = 2.5 yards. the picnic area is 80 yards wide in real life. how wide is the picnic area in the drawing ?

What is 1/2 x (6 x 4)+3 + 2 show your work

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?