In which of the four functions graphed here is y increasing by 1/2 each time x increases by 1?

a) a
b) b
c) c
d) a and d

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Can some one me with these questions

Which problem would you use the following proportion to solve for? 24/x = 40/100 a. what is 40% of 24? b. what percent is 24 of 40? c. twenty-four is 40% of what number? d. forty percent of 24 is what number?