1) the odometer on your car reads

Question

20,186.7 after going 62.3 miles. write and solve an equation to determoine how many miles were on the odometere before going 62.3 miles.

i wrote this; 0-62.3 = 20,186.7

2) michael bought a $25.00 gift for a friend. After he bought the gift, michael had $176.89. Write and solve an equation to calculate how much money Michael had before he bought the gift.
i wrote; g - 25.00 = 176.89
g - 201.89

3) This spring it rained a total of 11.5 inches. This was 3 inches less than last spring. write and solve an equation to find the amount of rain last season.
i wrote: r -3 - 11.5
r: - 14.5

are these correct?

Answer 1

You're right.

However your first equation is confusing. Please use a different letter than O which can be confused with 0.

Answer 2

1+1

Answer 3

miles on odometer before = miles on odometer after - miles traveled in between

20186.7 - 62.3 = 20124.4 miles

Answer 4

number 2 is supposed to be positive not negative.
r-3=11.5
r=14.5
thanks for the others though