Simplify

- (3a+4b) + 5a-4b

2a

8a-8b

2a-8b

2a+8b

Integrate from 0 to pi/2 (sinx + cosx) / (9+16sin (2x)) dx

A car that originally cost $20,000 depreciates (loses value) by 15% each year. In about how many years will the car be worth half its value? Use the equation 10,000 = 20,000 (0.85) ^x to solve the problem. Round your answer to the nearest dollar.

Nikhil gets paid a 5 percent commission on every pair of shoes that he sells. He earned $1.00 on the last pair of shoes that he sold. The expression that can be used to represent x, the price of the shoes, What was the price of the shoes?

A large shirt size is 35% larger than the small size. What is the percent rounded to the nearest compatible fraction?

The amazon river is 4,000 miles long, The Yangtze river is 3,964 miles long, and the nile river is 4,145 miles long. Write the steps you would use to order the lengths of the rivers, in miles, from greatest to least.

A textbook costs $108.00. If Matthew paid a total of $113.94 for the book and sales tax, what rate of sales tax was he charged?

3A to the 4th power b to the - 2 power and c to the 3rd power

How do you change 4/8 to an decimal?

Which represent the first two terms of the sequence: a1 = 2 and an = - 4 (an - 1) 2?

34times1.22subtrace0.89