Word Problem, A student rented a bicycle for a one-time fee of $12.00 and t...

A student rented a bicycle for a one-time fee of $12.00 and then a charge of $0.85 per day.She paid $28.15 for the use of the bicycle. How many days did she keep it?

Mixing problems, It is the final type of problems which we'll be looking at...

It is the final type of problems which we'll be looking at in this section.  We are going to be looking at mixing solutions of distinct percentages to obtain a new percentage. The

Quadratic equations,

Uniform motion, How do you do uniform motion? i am stuck on some problems

How do you do uniform motion? i am stuck on some problems

Linear combination(elimination), x-y=11 x+y=19

x-y=11 x+y=19

(-4, What would an equation of this line passing through each pair of poin...

What would an equation of this line passing through each pair of points given?

Expressions and inequlites, A blue whale gains 2.3 tons a month for the fir...

A blue whale gains 2.3 tons a month for the first year of life. If a blue whale weighed 15 tons at birth, how much will it weigh on its first birthday?

Ratio, If there is 1/4 of item X for every 7/12 of item Y, how much of item...

If there is 1/4 of item X for every 7/12 of item Y, how much of item X is there for 7/10 of item Y?

Graph, y=x^2+2x-15

y=x^2+2x-15

Need help Urgently!, I have quite a complex formula I need resolved, I can'...

I have quite a complex formula I need resolved, I can''t get my head around. I have got so far but I personally don''t know how to proceed further. HELP!