Sylvia spent 36 cents for a pencil and 55 cents for a notepad. use mental math to find how much she spent

91

Step-by-step explanation:

Well, let's write it down mental math by summing the easier parts of this sum, Whenever we make Mental Math we should make easier and sedimented calculations so that it flows easier.

30 +50 =80

6+5+11

80+11=91

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.

25/6

step-by-step explanation:

you multiply 4 by the denominator (4*6=24) and add it to the numerator which makes it 25/6.