The sale price S (in dollars) of an item is given by the formula S=L- rL, where L is the price (in dollars) and r is the discount rate (in decimal form) solve the formula for r?

Find the value of ax 4 ; a = 2, x = 1. select one: a. 2 b. 4 c. 1 d. 8

Math it's appreciated. (picture provided)

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)