Answer:
2x^2-2x-24
Step-by-step explanation:
(x+3)*(2x-8)=2x^2-8x+6x-24
=2x^2-2x-24 (divide by 2)
=x^2-x-12
hope my answer is right and helpful to u
Answer:
goodluck
Step-by-step explanation:
180
×.30
Is equals to 540
Remove the 0 and the answer is 54 miles.
Answer:
Credit remaining after 21 minutes = $30.4
Step-by-step explanation:
Credit remaining on a phone card is a linear function of the total calling time.
When graphed, let the linear function representing the line is,
y = mx + b
Where 'm' = slope of the line
b = y-intercept
From the graph,
Slope of the line = -0.12
y = -0.12x + b
If this line passes through a point (33, 28.96),
28.96 = -0.12(33) + b
b = 28.96 + 3.96
b = 32.92
Therefore, the linear function is,
f(x) = -0.12x + 32.92
where x = calling time
Credit left in the card after 21 minutes,
f(21) = -0.12(21) + 32.92
= -2.52 + 32.92
= $30.4
