Theresa bought three containers of tennis balls at $2.98 each. she had a coupon for $1 off. her mom paid for half of the remaining cost. how much did theresa pay? evaluate the expression [(3×2.98)-1]÷2

$3.97

Step-by-step explanation:

Three containers @$2.98 = 3 × 2.98 = $8.94

                                               Less $1 =   -1.00

                                                                  7.94

Less 50% paid my mom = ½ × 7.94 =   -3.97

                               Paid by Theresa =  $3.97

[(3 × 2.98) - 1] ÷ 2 = (8.94 - 1) ÷ 2 = 7.94 ÷ 2 = 3.97

the radius is 2 times the diameter.

step-by-step explanation: