Question

Joan and Kylie are shopping at the mall. Joan buys a pack of socks for $7. She also buys nine T-shirts, each marked at the same price. She spends a total of $79. Kylie buys a pack of water balloons for $3. She also buys seven T-shirts, each marked at the same price. Kylie spends a total of $59. The equation 9x+$= can be used to represent Joan’s purchases. The equation x+$=____ can be used to represent Kylie’s purchases.

a) 7, 79
b) 9, 72
c) 7, 59
d) 9, 66

Answer 1

The correct equation for Kylie's purchases is 7x + 3 = 59, where 7 represents the number of T-shirts and 59 is the total amount spent.

Step-by-step explanation:

The equations provided are meant to represent the total amount spent by Joan and Kylie on their shopping trips. Joan buys a pack of socks for $7 and nine T-shirts. Her total spending is $79, so the equation representing her purchases is 9x + 7 = 79. Kylie buys a pack of water balloons for $3 and seven T-shirts, with a total spending of $59. The correct equation that represents Kylie’s purchases is therefore 7x + 3 = 59. Among the options provided, the correct one is (c) 7, 59. This matches the number of T-shirts Kylie bought (7) and the total amount she spent ($59).