Question

1) the odometer on your car reads
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