Question 1 (1 point)

when does the number 1113 equal 87 in our base 10 system?

4

Step-by-step explanation:

We are given a number 1113 to some base which equals 87to base 10

Let the base be equal to a

Then using place value for 1113 to base a we get

a should be a posiitve integer.

By trial and error we check a =1,2,3,4,5....

We find that when a=4

Hence base number is 4.

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)