Marley brought 290 pennies to the bank. How many dimes did marley get?

How do I find this? ∫ ((e^x) / (2+e^x)) dx

A chemist has three acid solutions. The first solution contains 15% acid, the second contains 35% and the third contains 65%.

Morgan says that the domain of the relation { (2,3), (-4, 2), (0,-4), (1,5) } is {-4, 2, 3, 5}. She is incorrect. Find her mistake and correct it. State what her mistake was and what the correct domain is for the relation.

One number is 3 less than 5 times another number. The sum of the numbers is 27. What are the two numbers? Enter your answers in the boxes.

Find two consecutive positive integers such that the sum of their squares is 181

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.