If harrison is buying a bicycle for 340. what amount of sales tax must he pay if the sales tax rate is 7% ?

7% of 340
Note: "of" means multiplication
7% x 340 = .07 x 340 = 23.8

amount of sales tax is $23.80

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)

The answer here would be 10