Write the expression in the standard form a+b i
(8-8i) + (1+6i )= (simplify the answer)

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Kendra had twice as much money as kareem. kendra later spent $8 and kareem earned $6. by then,the two had the same amount of money. how much money did each have originally?