Graphing, i need help with my homework

i need help with my homework

Which quantity is bigger?, Sam is twice as old as John was two years ago. I...

Sam is twice as old as John was two years ago. If the difference between their ages be 2 years, how old is Sam today?

Variables, r-17

r-17

Models an functions.., resolve this a(x)=\/x-4+3

resolve this a(x)=\/x-4+3

Transformations, how do i solve transformations,one to one formuals onto fo...

how do i solve transformations,one to one formuals onto formulas

Equations, 2(5+6csquared)-30divided by 3 c=2 d=4

2(5+6csquared)-30divided by 3 c=2 d=4

..addition, what is 300000000000000000000+612222

what is 300000000000000000000+612222

Boolean,

Word problem, Susan wants to mix 10 pounds of Virginia Peanuts that cost $...

Susan wants to mix 10 pounds of Virginia Peanuts that cost $3.50 a pound with Spanish peanuts that cost $3.00 a pound to obtain a mixture that cost $3.40 a pound. How many pounds

Inequality, turn into an inequality expression, y= (0,330) x= (110,0)

turn into an inequality expression, y= (0,330) x= (110,0)