An experimenter is interested in the effect of expectations and drugs on alertness. each participant is given an amphetamine (stimulant) or a placebo (an inert substance). in addition, half in each group are told that the drug taken was a stimulant and half that the drug was a depressant. an alertness score for each participant is obtained from a composite of measures that include a questionnaire and observation.

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

answer:

f(5/2) = 10/3

i hope this you!

answer: it's upside down and i can't read it

step-by-step explanation:

$3720

step-by-step explanation:

taxable income = $31000

as per the 2018-2019 us tax bracket, the tax rate is 12% for an individual whose taxable income is between $9,526 to $38,700.

so, the tax to be paid by him = 12% of 31000

= 0.12 * 31000     [12% converted to decimal as 0.12]

= $3720