find the derivative:

y = (4xe^x) / (x^2+1)

4. For each equation, determine if = -2 is a solution. Explain or show your reasoning. a) 10 = 2 (x-9) b) 3 (x+4) = 2 (x+3) + 4

What is a factor of 67

A woman drives 169/4 miles to work each day. She stops for coffee at a shop that is 2/5 of the way to her job. How far does the woman drive before she stops for coffee?

Solve x2 + 4x - 4 = 8 for x. A) = - 12 or x = 2 B) x = - 11 or x = 1 C) x = - 2 or x = 12 D) x = - 1 or x = 11

32% as a fraction in lowest terms

Four friends bought 10 lbs of nuts and shared them equally. How many pounds if nuts did each friend get

Ten friends went to a local restaurant and all had the buffet at $6.75 each. Seven friends added ice cream for dessert for $1.99 each. Since it is a large group, a tip of $15.00 for the waitress was added. The following is the restaurant bill.

Betsy wants to paint the walls of her bedroom. Her bedroom measures 8 ft. by 10 ft. and has 8 ft. ceilings. Not counting doors and windows, how many square feet of wall will Betsy need to paint? 288 80 128 160

One winter the cost of bananas cost $0.80 per lb. The next winter the cost was $1.05 per lb. What was the percentage increase?

Which number is in the hundredths place 4982.6173