A. 35 greater than or equal to 14 + x 35 - 14 = 21 x = $21 b. If the shirt is 30% off it would cost $9.80 14 x 0.3 = 4.2 14 - 4.2 = 9.8 35 is greater than or equal to 9.80 + x 35 - 9.8 = 25.2 x = $25.20 This changes the inequality by making x greater than it was in part a c. Yes, you do have enough money to buy the shirt that is on sale and a pair of pants. x is the amount that you have left to spend after you buy the shirt that is on sale. 25.20 is greater than the cost of the pants.
Sandy's cost equation is y = 5x + 10 where y = cost and x = number of children. Kimmi's cost equation is y = 25 where y = cost. The fees are the same when x = 3 in other words when Sandy babysits 3 children. That is found by solving 5x + 10 = 25 for x. Subtract 10 from each side: 5x = 15 Divide by 5 on both sides: x = 3
