I got question 3 and 4 wrong, i need help, thank you!

Bandar Industries manufactures sporting equipment. One of the company's products is a footbat heimet that tequires special plastic: During the quarter ending June 30, the company manufactured 3,700 heimets, using 2.294 kilograms of plastic. The plastic cost the compary $15,140. According to the standard cost card, each heimet should require 0.52 kilograms of plastic, at a cost of $7.00 per kilogram. Required 1. What is the standard quantify of kilograms of plastic (50) that is allowed to make 3.700 heimets? 2. What is the standard materials cost allowed (50 * 5P ) to make 3.700 heimets? 3. What is the materals spending variance? 4. What is the moterials price variance and the materials quantity variance? (For requirements 3 and 4 , indicate the effect of each variance by selecting "F" for favarable, "U" for unfavorabie, and "None" for no effect (i.e., zero variance). Input all amounts as positive values. Do not round intermediate calculations.)