If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11? y = startfraction 5 over 18 endfraction (11) y = startfraction 18 over 5 endfraction (11) y = startfraction (18) (5) over 11 endfraction y = startfraction 11 over (18) (5) endfraction

problem:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

f(5/2) = 10/3

i hope this !

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!

no solution

step-by-step explanation:

there is not enough information in the problem to solve.

susie has 7 apples