Write (7 + 3i) + (6 − i) as a complex number in standard form.

a) 13 + 2i
b) 10 + 6i
c) 13 + 4i
d) 13 − 2i

Estimate the product. round the first factor to the nearest whole number, round the second factor to the nearest ten, and then multiply. 3 8/9 × 96

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian 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? i need this done

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.