Allen started to save money from his daily allowance. in the first week he saved $5.8 and every next week $3.6 more than the previous week. how much money did he save in 4 weeks?

$44.8.

Step-by-step explanation:

Let a = first term = $5.8

d = common difference = $3.6

n = number of terms = 4

Using the sum of terms

Sn = n/2((2a + (n - 1)d))

Sn = 4/2((2(5.8) + (4 - 1)3.6))

     = 2(11.6 + 10.8)

     = 2(22.4)

     = 44.8

In 4 weeks, Allen would have saved $44.8.

i believe the answer to be 48

step-by-step explanation:

b

step-by-step explanation:

a difference is the result of subtraction. while each of these expressions has subtraction in it, a difference will be the result when subtraction is the last operation applied in the order of operations for the expression. this means subtraction must be outside of the parenthesis. only b has this.