John saves n$ 3500 the first month and every month later decreases it by n$ 75. a) how much will john save in the 11th month? (5) b) how much will he save after two (2) years?

(a) $4250,

(b) $5225.

Step-by-step explanation:

Let n represent number of months.

We have been given that John saves $3500 the first month and every month later decreases it by $75.

First of all, we will find formula of John's savings in n months using arithmetic progression, where, 1st term is 3500 and common difference is 75.

, where,

n = Number of terms in a sequence,

d = Common difference.

(a) To find John's savings in 11 months, we will substitute in above formula.

Therefore, John would have saved $4250 in the 11th month.

(b) To find John's savings after 2 years, we will substitute in above formula.

Therefore, John would have saved $5225 in 2 years.

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

15% chance.

step-by-step explanation:

3/10 times, the 5 year old will get a tablet. 5/10 times, the 13 yer old will get a tablet. multiply both fractions to get 15/100 times, both would have a tablet.