The subtraction sign in front of the second set of parenthesis changes the signs on the terms inside those parenthesis. So this could be rewritten as

. None of the exponents on the x are the same, so we will just express it in terms of descending powers of x.

. This is also the same as

if you don't like to start with a negative. Either one is correct.
She needs to ride 46 miles . to get this answer you multiply 61 by 6 and get 366. then you add up all the numbers and get 320 then you subtract 366 by 320 .
Looks like 14.4 because you have to add them all together and divide by the total numbers
(20+22+10+5+15)/ 5
Using the 45°-45°-90° triangle theorem, find the value of h, the height of the wall. C. 13 ft