UM-7B-Algebraic expression

The sum of 9 and 8 is

• 9-8

• 9x8

• 9:8

• 9+8

The sum of 7 and a number x is

• x-7

• x+7

• 7-x

• 7x

9 increased by a number p is

• 9+p

• 9-p

• 9+2p

• p-9

14 decreased by a number p is

• p-14

• p+14

• p:14

• 14-p

The product of 6 and a number y is

• 6y

• 6:y

• 6-y

• 6+y

Three times a number n decreased by 11 is

• 3n+11

• 11-3n

• 11:3n

• 3n-11

The perimeter of a circle with radius r is

• rx2x3.14

• rx3.14

• rxrx3.14

• rx3x3.14

• 2/3

• 3

• 3/2

• 2

• -60

• -16

• -61

• 61

• -20

• 20

• 10

• -10