# Fuel consumption of motor

1. Sep 19, 2007

### steve 99

1. The problem statement, all variables and given/known data

I posted int he other section but not sure if that area was a bit high maths

I have this questions an answer to it would be great.
.Q.1 At t minutes after an engine starts, the rate of fuel consumption is Rkg per minute. it is given by R=10+ 10/2t+1.

a) Sketch R as a function of t

b) find the rate of consumption after 7 mins

c) find the limiting value of R as t becomes very large

d) calculate the total consumption in the 1st 7 mins

not sure how to do it
Thank You

2. Relevant equations

3. The attempt at a solution

I can do part 2

2. Sep 19, 2007

### EnumaElish

You must show an attempt, although it may be something very basic.

3. Sep 19, 2007