Answers:

a. a + b
b. c + d
c. a + d
d. a * b
e. b * d
f. c * d
g. a * a

i choose B since the square root of 25 is 5 and the square root of 16 is 4 so 5+4 is 9

i also chose g as a x a will cancel each other's sqyare root and the answer will be 3

I also chose c x d since u know already they both are rational number either way

i also chose d since it equals to 6

B- C+D

Step-by-step explanation:

just took the test

y = x + 95

y = 42 + 95

y=137 mm hg

answer: the common difference is -0.10