12*(-5) + (-18):(-3) = -60 + 6 = -54;
Answer:
He added 7.5 instead of subtracting
Step-by-step explanation:
Answer:
A) $24
Step-by-step explanation:
Looking at the graph, each gallon of gasoline is $3. Therefore, the equation would be y = 3x. To solve for 8 gallons, substitute the value into the equation.
y = 3(8) = 24
Therefore, the cost of 8 gallons of gasoline would be $24.
51÷2=25.5 31÷2=15.5. 25.5× 15.5= 395.25
you just have to multiply
Given two points, (x1, y1) and (x2, y2), the slope can be found by ...
... slope = (change in y)/(change in x) = (y2-y1)/(x2-x1)
For your given points, the slope is
... slope = (79 -(-20))/(9 -(-2)) = 99/11 = 9
The point-slope equation for a line with slope m through point (h, k) is
... y -k = m(x -h)
You have m=9, h=-2, k=-20, so the equation is
... y +2 = 9(x +20)
