One supplementary angle is 15 degrees less than twice the other. Find the measure of the two angles.

By definition,

A+B=180

.

.

B=2A-15 (I think you meant 15 degrees and not 150 degrees)

Substitute,

3A-15=180

Solve for A, then go back and solve for B.

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 !

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value