math check

1. A tiny cube shaped space inside a computer chip has been measured to be 0.000000293m wide, 0.000000034m long and 0.00000255m high. What is its volume? Write your answer in scientific notation.

The volume is _____?________  m3m3   

For example, if you want to enter the number 4.578×10−34.578×10-3, you would type 4.578 * 10^-3. 

2.  Given that f(x)=x^2−5xf(x)=x2-5x and g(x)=x+2g(x)=x+2, find 

(a) (f +g)(x)=

(b) (f-g)(x)=

(c) (fg)(x)=

(d) (f/g)(x)=

2. Use synthetic division to divide x^3+9x^2+22x+17 by x+2 

the assignment is upload
 

 3. A small toy rocket is launched from a 12-foot pad. The height (hh, in feet) of the rocket tt seconds after taking off is given by the formula h=−3t2+0t+12h=-3t2+0t+12. How long will it take the rocket to hit the ground?

t=