What are the domain and range of
d range of f(x) = ( 1)* + 2?
domain: {xix> -1}; range: (y ly > 0}
domain: {x\*> *), range: {yly > 2}
domain: {x | x is a real number}; range: {yly> 2}
domain: {x|x is a real number}; range: {yly > -2}

step-by-step explanation:

0

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation:

let x and 400 - x be the two numbers.  

==> 0.80x + 0.85(400 - x) = 400 - 68 from the statement of the problem.  

< ==> 0.80x + 0.85(400 - x) = 400 - 68  

==> 340 - 0.05x = 332  

< ==> -0.05x = -8 ==> x = 160, the first number ==> 400 - x = 240, the second number.