Tina pet sits to earn extra money. she charges a flat service fee of $20, plus $20 per day. if one of her customers spent less than $160, which of the following inequalities could be used to solve for x, the number of days the customer paid for pet sitting?
$20x + $20 < $160
$20x < $180
$20x - $20 < $160
$20x < $160

Will gve pints stars and brainliest

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}

Asales representative from a local radio station is trying to convince the owner of a small fitness club to advertise on her station. the representative says that if the owner begins advertising on the station today, the club's total number of members will grow exponentially each month. she uses the given expression to model the number of club members, in hundreds, after advertising for t months.