How am I supposed to do this Polynomial Question?!

(7a^5-3a^3+5) - (-2a^5-4a^3+13)

I have tried it multiple getting the same wrong answer.

How many times can 14 go into 98

Find the value of k so that the differential equation is exact, and find the general solution

Solve this ratio 18 hours to 2 days as a fraction in simplest form

McKenzie's rabbit eats - of a pound of food TWICE a day. If McKenzie buys a 20-pound bag of food, how many days will she be able to feed her rabbit?

Hardware store sells a 5 pound box of nails for $16.80. The store is having a 20% off sale on all merchandise. What is the sale price of one 5 pound box of nails.

Evaluate e-1/2f when f equals, 2.

Solve for n. Round to the tenths place, if necessary. A. n = 12 B. n ≈ 9.5 C. n = 11 D. n

2ft 3in = _in what is the answer

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the second equation is substituted into the first equation. 3x + 2y = - 21 x - 3y = 4

A potter works 4 days a week, makes 15