Help! Can anyone help? I’ve been stuck.. I’ll make sure to give The answer is not 3,850. Thank you.

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase